./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c -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 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:10:19,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:10:19,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:10:19,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:10:19,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:10:19,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:10:19,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:10:19,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:10:19,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:10:19,102 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:10:19,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:10:19,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:10:19,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:10:19,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:10:19,103 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:10:19,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:10:19,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:10:19,103 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:10:19,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:10:19,104 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:10:19,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:10:19,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:10:19,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:10:19,105 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 -> 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 [2025-02-05 16:10:19,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:10:19,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:10:19,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:10:19,286 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:10:19,286 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:10:19,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2025-02-05 16:10:20,368 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3873b23ce/c9efadf57dd64137b7245383e502b9e8/FLAG1648dd7e0 [2025-02-05 16:10:20,692 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:10:20,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2025-02-05 16:10:20,703 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3873b23ce/c9efadf57dd64137b7245383e502b9e8/FLAG1648dd7e0 [2025-02-05 16:10:20,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3873b23ce/c9efadf57dd64137b7245383e502b9e8 [2025-02-05 16:10:20,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:10:20,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:10:20,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:10:20,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:10:20,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:10:20,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:10:20" (1/1) ... [2025-02-05 16:10:20,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b6642a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:20, skipping insertion in model container [2025-02-05 16:10:20,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:10:20" (1/1) ... [2025-02-05 16:10:21,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:10:21,154 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2025-02-05 16:10:21,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:10:21,164 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:10:21,200 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2025-02-05 16:10:21,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:10:21,215 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:10:21,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21 WrapperNode [2025-02-05 16:10:21,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:10:21,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:10:21,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:10:21,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:10:21,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,251 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 416 [2025-02-05 16:10:21,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:10:21,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:10:21,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:10:21,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:10:21,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,263 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,276 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 16:10:21,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,284 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:10:21,292 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:10:21,292 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:10:21,292 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:10:21,293 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (1/1) ... [2025-02-05 16:10:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:10:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:21,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 16:10:21,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 16:10:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:10:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2025-02-05 16:10:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2025-02-05 16:10:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2025-02-05 16:10:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2025-02-05 16:10:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2025-02-05 16:10:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2025-02-05 16:10:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2025-02-05 16:10:21,341 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2025-02-05 16:10:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2025-02-05 16:10:21,342 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2025-02-05 16:10:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 16:10:21,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 16:10:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:10:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:10:21,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:10:21,436 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:10:21,438 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:10:21,909 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2025-02-05 16:10:21,910 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:10:21,924 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:10:21,924 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:10:21,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:10:21 BoogieIcfgContainer [2025-02-05 16:10:21,925 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:10:21,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:10:21,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:10:21,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:10:21,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:10:20" (1/3) ... [2025-02-05 16:10:21,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cad4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:10:21, skipping insertion in model container [2025-02-05 16:10:21,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:10:21" (2/3) ... [2025-02-05 16:10:21,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cad4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:10:21, skipping insertion in model container [2025-02-05 16:10:21,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:10:21" (3/3) ... [2025-02-05 16:10:21,937 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2025-02-05 16:10:21,949 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:10:21,951 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c that has 7 procedures, 176 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 16:10:22,010 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:10:22,019 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;@3f18616e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:10:22,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:10:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 131 states have (on average 1.5801526717557253) internal successors, (207), 136 states have internal predecessors, (207), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-05 16:10:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 16:10:22,027 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:22,028 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:22,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:22,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1088250477, now seen corresponding path program 1 times [2025-02-05 16:10:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:22,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554007793] [2025-02-05 16:10:22,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:22,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:22,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 16:10:22,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 16:10:22,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:22,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:22,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:22,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554007793] [2025-02-05 16:10:22,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554007793] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:22,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:22,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766180325] [2025-02-05 16:10:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:22,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:22,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:22,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:22,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:22,280 INFO L87 Difference]: Start difference. First operand has 176 states, 131 states have (on average 1.5801526717557253) internal successors, (207), 136 states have internal predecessors, (207), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 16:10:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:22,438 INFO L93 Difference]: Finished difference Result 352 states and 601 transitions. [2025-02-05 16:10:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-05 16:10:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:22,449 INFO L225 Difference]: With dead ends: 352 [2025-02-05 16:10:22,451 INFO L226 Difference]: Without dead ends: 179 [2025-02-05 16:10:22,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:22,465 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 7 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:22,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 800 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-02-05 16:10:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2025-02-05 16:10:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 134 states have (on average 1.5597014925373134) internal successors, (209), 138 states have internal predecessors, (209), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-05 16:10:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 283 transitions. [2025-02-05 16:10:22,523 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 283 transitions. Word has length 15 [2025-02-05 16:10:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:22,523 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 283 transitions. [2025-02-05 16:10:22,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 16:10:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 283 transitions. [2025-02-05 16:10:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 16:10:22,527 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:22,527 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:22,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:10:22,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:22,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1751837251, now seen corresponding path program 1 times [2025-02-05 16:10:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:22,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921807038] [2025-02-05 16:10:22,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:22,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:22,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-05 16:10:22,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 16:10:22,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:22,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:22,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:22,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921807038] [2025-02-05 16:10:22,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921807038] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:22,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:22,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:22,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489489329] [2025-02-05 16:10:22,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:22,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:22,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:22,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:22,686 INFO L87 Difference]: Start difference. First operand 179 states and 283 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 16:10:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:22,739 INFO L93 Difference]: Finished difference Result 369 states and 587 transitions. [2025-02-05 16:10:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-05 16:10:22,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:22,741 INFO L225 Difference]: With dead ends: 369 [2025-02-05 16:10:22,742 INFO L226 Difference]: Without dead ends: 193 [2025-02-05 16:10:22,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:22,743 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 22 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:22,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 818 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-02-05 16:10:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2025-02-05 16:10:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 148 states have internal predecessors, (222), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-05 16:10:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 298 transitions. [2025-02-05 16:10:22,772 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 298 transitions. Word has length 16 [2025-02-05 16:10:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:22,772 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 298 transitions. [2025-02-05 16:10:22,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 16:10:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 298 transitions. [2025-02-05 16:10:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 16:10:22,775 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:22,775 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:22,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 16:10:22,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:22,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1969301919, now seen corresponding path program 1 times [2025-02-05 16:10:22,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:22,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619040434] [2025-02-05 16:10:22,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:22,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 16:10:22,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 16:10:22,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:22,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:22,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:22,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619040434] [2025-02-05 16:10:22,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619040434] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:22,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:22,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 16:10:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449574842] [2025-02-05 16:10:22,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:22,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:10:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:22,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:10:22,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 16:10:22,893 INFO L87 Difference]: Start difference. First operand 191 states and 298 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 16:10:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:22,925 INFO L93 Difference]: Finished difference Result 401 states and 633 transitions. [2025-02-05 16:10:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:10:22,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2025-02-05 16:10:22,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:22,929 INFO L225 Difference]: With dead ends: 401 [2025-02-05 16:10:22,929 INFO L226 Difference]: Without dead ends: 220 [2025-02-05 16:10:22,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 16:10:22,932 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 22 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 548 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 [2025-02-05 16:10:22,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 548 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-02-05 16:10:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 193. [2025-02-05 16:10:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.5342465753424657) internal successors, (224), 150 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-05 16:10:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 300 transitions. [2025-02-05 16:10:22,962 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 300 transitions. Word has length 23 [2025-02-05 16:10:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:22,963 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 300 transitions. [2025-02-05 16:10:22,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 16:10:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 300 transitions. [2025-02-05 16:10:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 16:10:22,965 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:22,965 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:22,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:10:22,965 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:22,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash -586142999, now seen corresponding path program 1 times [2025-02-05 16:10:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68982820] [2025-02-05 16:10:22,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:22,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-05 16:10:22,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 16:10:23,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:23,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:23,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68982820] [2025-02-05 16:10:23,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68982820] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:23,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:23,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:10:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966063954] [2025-02-05 16:10:23,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:23,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:10:23,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:23,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:10:23,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:23,092 INFO L87 Difference]: Start difference. First operand 193 states and 300 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:23,123 INFO L93 Difference]: Finished difference Result 377 states and 590 transitions. [2025-02-05 16:10:23,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:23,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2025-02-05 16:10:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:23,125 INFO L225 Difference]: With dead ends: 377 [2025-02-05 16:10:23,125 INFO L226 Difference]: Without dead ends: 199 [2025-02-05 16:10:23,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:23,127 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:23,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1090 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-02-05 16:10:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2025-02-05 16:10:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 149 states have (on average 1.523489932885906) internal successors, (227), 153 states have internal predecessors, (227), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2025-02-05 16:10:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 304 transitions. [2025-02-05 16:10:23,138 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 304 transitions. Word has length 32 [2025-02-05 16:10:23,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:23,138 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 304 transitions. [2025-02-05 16:10:23,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 304 transitions. [2025-02-05 16:10:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 16:10:23,139 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:23,139 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:23,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:10:23,139 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:23,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1592030103, now seen corresponding path program 1 times [2025-02-05 16:10:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354334853] [2025-02-05 16:10:23,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:23,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 16:10:23,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 16:10:23,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:23,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:23,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:23,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354334853] [2025-02-05 16:10:23,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354334853] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:23,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454435517] [2025-02-05 16:10:23,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:23,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:23,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:23,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:23,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 16:10:23,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 16:10:23,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 16:10:23,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:23,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:23,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:10:23,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:23,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:10:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:23,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454435517] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:10:23,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:10:23,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-02-05 16:10:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075085120] [2025-02-05 16:10:23,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:10:23,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:10:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:23,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:10:23,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:23,517 INFO L87 Difference]: Start difference. First operand 197 states and 304 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 16:10:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:23,591 INFO L93 Difference]: Finished difference Result 442 states and 696 transitions. [2025-02-05 16:10:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:23,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2025-02-05 16:10:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:23,593 INFO L225 Difference]: With dead ends: 442 [2025-02-05 16:10:23,593 INFO L226 Difference]: Without dead ends: 260 [2025-02-05 16:10:23,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:23,594 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 91 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:23,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 591 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:10:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-02-05 16:10:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 250. [2025-02-05 16:10:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 192 states have (on average 1.5) internal successors, (288), 196 states have internal predecessors, (288), 48 states have call successors, (48), 8 states have call predecessors, (48), 9 states have return successors, (49), 49 states have call predecessors, (49), 48 states have call successors, (49) [2025-02-05 16:10:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 385 transitions. [2025-02-05 16:10:23,606 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 385 transitions. Word has length 34 [2025-02-05 16:10:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:23,606 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 385 transitions. [2025-02-05 16:10:23,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 16:10:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 385 transitions. [2025-02-05 16:10:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 16:10:23,607 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:23,607 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:23,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 16:10:23,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:23,811 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:23,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1861246826, now seen corresponding path program 1 times [2025-02-05 16:10:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:23,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026833232] [2025-02-05 16:10:23,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:23,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:23,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-05 16:10:23,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 16:10:23,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:23,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:10:23,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:23,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026833232] [2025-02-05 16:10:23,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026833232] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:23,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:23,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:10:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853852553] [2025-02-05 16:10:23,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:23,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:10:23,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:23,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:10:23,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:23,967 INFO L87 Difference]: Start difference. First operand 250 states and 385 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 16:10:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:24,073 INFO L93 Difference]: Finished difference Result 394 states and 613 transitions. [2025-02-05 16:10:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:10:24,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2025-02-05 16:10:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:24,077 INFO L225 Difference]: With dead ends: 394 [2025-02-05 16:10:24,077 INFO L226 Difference]: Without dead ends: 246 [2025-02-05 16:10:24,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:24,078 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:24,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1325 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:10:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-02-05 16:10:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2025-02-05 16:10:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.470899470899471) internal successors, (278), 193 states have internal predecessors, (278), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-02-05 16:10:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 374 transitions. [2025-02-05 16:10:24,094 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 374 transitions. Word has length 35 [2025-02-05 16:10:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:24,094 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 374 transitions. [2025-02-05 16:10:24,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 16:10:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 374 transitions. [2025-02-05 16:10:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-05 16:10:24,099 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:24,099 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:24,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 16:10:24,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:24,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash -734314135, now seen corresponding path program 2 times [2025-02-05 16:10:24,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:24,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377649416] [2025-02-05 16:10:24,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 16:10:24,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:24,109 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-05 16:10:24,114 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 56 statements. [2025-02-05 16:10:24,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-05 16:10:24,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-05 16:10:24,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:24,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377649416] [2025-02-05 16:10:24,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377649416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:24,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:24,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:24,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373360396] [2025-02-05 16:10:24,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:24,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:24,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:24,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:24,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:24,147 INFO L87 Difference]: Start difference. First operand 246 states and 374 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:24,222 INFO L93 Difference]: Finished difference Result 462 states and 727 transitions. [2025-02-05 16:10:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:24,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2025-02-05 16:10:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:24,225 INFO L225 Difference]: With dead ends: 462 [2025-02-05 16:10:24,227 INFO L226 Difference]: Without dead ends: 244 [2025-02-05 16:10:24,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:24,229 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 7 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:24,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 753 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-02-05 16:10:24,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2025-02-05 16:10:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 188 states have (on average 1.4680851063829787) internal successors, (276), 192 states have internal predecessors, (276), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-02-05 16:10:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 370 transitions. [2025-02-05 16:10:24,246 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 370 transitions. Word has length 56 [2025-02-05 16:10:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:24,247 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 370 transitions. [2025-02-05 16:10:24,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 370 transitions. [2025-02-05 16:10:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-05 16:10:24,249 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:24,249 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:24,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 16:10:24,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:24,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:24,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1795771519, now seen corresponding path program 1 times [2025-02-05 16:10:24,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:24,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239620571] [2025-02-05 16:10:24,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:24,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:24,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-05 16:10:24,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-05 16:10:24,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:24,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-05 16:10:24,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:24,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239620571] [2025-02-05 16:10:24,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239620571] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:24,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:24,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:24,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369757924] [2025-02-05 16:10:24,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:24,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:24,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:24,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:24,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:24,317 INFO L87 Difference]: Start difference. First operand 244 states and 370 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:24,362 INFO L93 Difference]: Finished difference Result 467 states and 725 transitions. [2025-02-05 16:10:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:24,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2025-02-05 16:10:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:24,366 INFO L225 Difference]: With dead ends: 467 [2025-02-05 16:10:24,366 INFO L226 Difference]: Without dead ends: 251 [2025-02-05 16:10:24,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:24,367 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 8 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:24,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 778 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-02-05 16:10:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2025-02-05 16:10:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 194 states have (on average 1.4639175257731958) internal successors, (284), 198 states have internal predecessors, (284), 47 states have call successors, (47), 9 states have call predecessors, (47), 9 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-02-05 16:10:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 378 transitions. [2025-02-05 16:10:24,380 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 378 transitions. Word has length 56 [2025-02-05 16:10:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:24,380 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 378 transitions. [2025-02-05 16:10:24,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 378 transitions. [2025-02-05 16:10:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-05 16:10:24,380 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:24,380 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:24,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 16:10:24,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:24,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1592290681, now seen corresponding path program 1 times [2025-02-05 16:10:24,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142824130] [2025-02-05 16:10:24,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:24,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:24,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-05 16:10:24,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-05 16:10:24,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:24,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 16:10:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:24,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142824130] [2025-02-05 16:10:24,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142824130] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:24,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:24,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506634317] [2025-02-05 16:10:24,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:24,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:24,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:24,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:24,460 INFO L87 Difference]: Start difference. First operand 251 states and 378 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:24,500 INFO L93 Difference]: Finished difference Result 511 states and 781 transitions. [2025-02-05 16:10:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:24,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2025-02-05 16:10:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:24,503 INFO L225 Difference]: With dead ends: 511 [2025-02-05 16:10:24,503 INFO L226 Difference]: Without dead ends: 288 [2025-02-05 16:10:24,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:24,505 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 22 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:24,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 793 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-02-05 16:10:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2025-02-05 16:10:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 225 states have (on average 1.4222222222222223) internal successors, (320), 229 states have internal predecessors, (320), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2025-02-05 16:10:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 420 transitions. [2025-02-05 16:10:24,522 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 420 transitions. Word has length 57 [2025-02-05 16:10:24,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:24,523 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 420 transitions. [2025-02-05 16:10:24,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 16:10:24,523 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 420 transitions. [2025-02-05 16:10:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-05 16:10:24,524 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:24,524 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:24,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 16:10:24,525 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:24,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash 610717128, now seen corresponding path program 1 times [2025-02-05 16:10:24,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:24,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122524120] [2025-02-05 16:10:24,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:24,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 16:10:24,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 16:10:24,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:24,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-02-05 16:10:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122524120] [2025-02-05 16:10:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122524120] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:24,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:10:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220869544] [2025-02-05 16:10:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:24,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:10:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:24,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:10:24,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:24,632 INFO L87 Difference]: Start difference. First operand 286 states and 420 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 16:10:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:24,655 INFO L93 Difference]: Finished difference Result 523 states and 781 transitions. [2025-02-05 16:10:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2025-02-05 16:10:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:24,657 INFO L225 Difference]: With dead ends: 523 [2025-02-05 16:10:24,657 INFO L226 Difference]: Without dead ends: 288 [2025-02-05 16:10:24,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:24,658 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:24,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1061 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-02-05 16:10:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2025-02-05 16:10:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 225 states have (on average 1.4088888888888889) internal successors, (317), 229 states have internal predecessors, (317), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2025-02-05 16:10:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 417 transitions. [2025-02-05 16:10:24,668 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 417 transitions. Word has length 75 [2025-02-05 16:10:24,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:24,668 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 417 transitions. [2025-02-05 16:10:24,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 16:10:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 417 transitions. [2025-02-05 16:10:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-05 16:10:24,669 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:24,669 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:24,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 16:10:24,669 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:24,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash -764366104, now seen corresponding path program 1 times [2025-02-05 16:10:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:24,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612637892] [2025-02-05 16:10:24,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:24,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:24,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-05 16:10:24,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-05 16:10:24,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:24,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2025-02-05 16:10:24,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:24,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612637892] [2025-02-05 16:10:24,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612637892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:24,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:24,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371042618] [2025-02-05 16:10:24,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:24,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:24,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:24,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:24,757 INFO L87 Difference]: Start difference. First operand 286 states and 417 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 16:10:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:24,797 INFO L93 Difference]: Finished difference Result 510 states and 765 transitions. [2025-02-05 16:10:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2025-02-05 16:10:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:24,800 INFO L225 Difference]: With dead ends: 510 [2025-02-05 16:10:24,800 INFO L226 Difference]: Without dead ends: 280 [2025-02-05 16:10:24,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:24,802 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 9 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:24,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 761 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:24,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-02-05 16:10:24,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2025-02-05 16:10:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 220 states have (on average 1.3863636363636365) internal successors, (305), 224 states have internal predecessors, (305), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-05 16:10:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 403 transitions. [2025-02-05 16:10:24,819 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 403 transitions. Word has length 103 [2025-02-05 16:10:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:24,820 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 403 transitions. [2025-02-05 16:10:24,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 16:10:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 403 transitions. [2025-02-05 16:10:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-05 16:10:24,822 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:24,823 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:24,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 16:10:24,823 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:24,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash -353924808, now seen corresponding path program 1 times [2025-02-05 16:10:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547186127] [2025-02-05 16:10:24,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:24,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:24,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 16:10:24,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 16:10:24,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:24,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2025-02-05 16:10:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547186127] [2025-02-05 16:10:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547186127] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457354264] [2025-02-05 16:10:24,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:24,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:24,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:24,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:24,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 16:10:25,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 16:10:25,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 16:10:25,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:25,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:25,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:10:25,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-02-05 16:10:25,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457354264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:25,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:25,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 16:10:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974442965] [2025-02-05 16:10:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:25,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:25,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:25,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:25,158 INFO L87 Difference]: Start difference. First operand 280 states and 403 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:10:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:25,213 INFO L93 Difference]: Finished difference Result 506 states and 744 transitions. [2025-02-05 16:10:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:25,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2025-02-05 16:10:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:25,215 INFO L225 Difference]: With dead ends: 506 [2025-02-05 16:10:25,216 INFO L226 Difference]: Without dead ends: 263 [2025-02-05 16:10:25,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:25,217 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 32 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:25,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 718 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2025-02-05 16:10:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2025-02-05 16:10:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 206 states have (on average 1.3786407766990292) internal successors, (284), 210 states have internal predecessors, (284), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-02-05 16:10:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 376 transitions. [2025-02-05 16:10:25,234 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 376 transitions. Word has length 137 [2025-02-05 16:10:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:25,235 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 376 transitions. [2025-02-05 16:10:25,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:10:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 376 transitions. [2025-02-05 16:10:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-02-05 16:10:25,237 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:25,237 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:25,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 16:10:25,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:25,442 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:25,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1540338194, now seen corresponding path program 1 times [2025-02-05 16:10:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106177487] [2025-02-05 16:10:25,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:25,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-02-05 16:10:25,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-02-05 16:10:25,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:25,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2025-02-05 16:10:25,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:25,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106177487] [2025-02-05 16:10:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106177487] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:25,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644031812] [2025-02-05 16:10:25,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:25,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:25,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:25,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:25,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 16:10:25,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-02-05 16:10:25,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-02-05 16:10:25,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:25,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:25,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:10:25,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2025-02-05 16:10:25,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644031812] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:25,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:25,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 16:10:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417347237] [2025-02-05 16:10:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:25,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:25,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:25,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:25,702 INFO L87 Difference]: Start difference. First operand 263 states and 376 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:10:25,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:25,766 INFO L93 Difference]: Finished difference Result 472 states and 690 transitions. [2025-02-05 16:10:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:25,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 141 [2025-02-05 16:10:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:25,769 INFO L225 Difference]: With dead ends: 472 [2025-02-05 16:10:25,770 INFO L226 Difference]: Without dead ends: 244 [2025-02-05 16:10:25,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:25,771 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 34 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:25,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 714 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-02-05 16:10:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2025-02-05 16:10:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 190 states have (on average 1.3736842105263158) internal successors, (261), 194 states have internal predecessors, (261), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2025-02-05 16:10:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 347 transitions. [2025-02-05 16:10:25,783 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 347 transitions. Word has length 141 [2025-02-05 16:10:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:25,783 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 347 transitions. [2025-02-05 16:10:25,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:10:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 347 transitions. [2025-02-05 16:10:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-02-05 16:10:25,788 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:25,788 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:25,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 16:10:25,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:25,989 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:25,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 270179104, now seen corresponding path program 1 times [2025-02-05 16:10:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:25,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814217479] [2025-02-05 16:10:25,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:26,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-02-05 16:10:26,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-02-05 16:10:26,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:26,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2025-02-05 16:10:26,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:26,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814217479] [2025-02-05 16:10:26,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814217479] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:26,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241413028] [2025-02-05 16:10:26,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:26,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:26,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:26,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:26,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 16:10:26,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-02-05 16:10:26,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-02-05 16:10:26,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:26,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:26,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:10:26,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-02-05 16:10:26,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:26,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241413028] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:26,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:26,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-05 16:10:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211216797] [2025-02-05 16:10:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:26,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:26,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:26,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:26,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:26,251 INFO L87 Difference]: Start difference. First operand 244 states and 347 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:10:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:26,399 INFO L93 Difference]: Finished difference Result 463 states and 673 transitions. [2025-02-05 16:10:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 144 [2025-02-05 16:10:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:26,402 INFO L225 Difference]: With dead ends: 463 [2025-02-05 16:10:26,402 INFO L226 Difference]: Without dead ends: 275 [2025-02-05 16:10:26,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:26,403 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 31 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:26,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 726 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:10:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2025-02-05 16:10:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2025-02-05 16:10:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 217 states have (on average 1.3732718894009217) internal successors, (298), 221 states have internal predecessors, (298), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-02-05 16:10:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 390 transitions. [2025-02-05 16:10:26,426 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 390 transitions. Word has length 144 [2025-02-05 16:10:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:26,427 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 390 transitions. [2025-02-05 16:10:26,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:10:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 390 transitions. [2025-02-05 16:10:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-02-05 16:10:26,428 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:26,428 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:26,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 16:10:26,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-05 16:10:26,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:26,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash 208628424, now seen corresponding path program 2 times [2025-02-05 16:10:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:26,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771582810] [2025-02-05 16:10:26,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 16:10:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:26,641 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 144 statements into 2 equivalence classes. [2025-02-05 16:10:26,645 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 144 statements. [2025-02-05 16:10:26,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-05 16:10:26,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-05 16:10:26,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:26,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771582810] [2025-02-05 16:10:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771582810] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:26,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:26,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:26,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698445960] [2025-02-05 16:10:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:26,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:26,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:26,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:26,674 INFO L87 Difference]: Start difference. First operand 275 states and 390 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-02-05 16:10:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:26,702 INFO L93 Difference]: Finished difference Result 419 states and 609 transitions. [2025-02-05 16:10:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:26,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 144 [2025-02-05 16:10:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:26,704 INFO L225 Difference]: With dead ends: 419 [2025-02-05 16:10:26,704 INFO L226 Difference]: Without dead ends: 279 [2025-02-05 16:10:26,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:26,705 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:26,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 770 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2025-02-05 16:10:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2025-02-05 16:10:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 220 states have (on average 1.3681818181818182) internal successors, (301), 224 states have internal predecessors, (301), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-02-05 16:10:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 393 transitions. [2025-02-05 16:10:26,716 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 393 transitions. Word has length 144 [2025-02-05 16:10:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:26,716 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 393 transitions. [2025-02-05 16:10:26,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-02-05 16:10:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 393 transitions. [2025-02-05 16:10:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-02-05 16:10:26,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:26,718 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:26,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-05 16:10:26,718 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:26,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1707560964, now seen corresponding path program 1 times [2025-02-05 16:10:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:26,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095395387] [2025-02-05 16:10:26,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:26,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:26,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-02-05 16:10:26,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-02-05 16:10:26,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:26,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-02-05 16:10:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:26,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095395387] [2025-02-05 16:10:26,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095395387] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:26,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541312122] [2025-02-05 16:10:26,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:26,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:26,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:26,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:26,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 16:10:26,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-02-05 16:10:27,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-02-05 16:10:27,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:27,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:27,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:10:27,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-05 16:10:27,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541312122] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:27,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:27,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-05 16:10:27,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091567372] [2025-02-05 16:10:27,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:27,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:27,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:27,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:27,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:27,127 INFO L87 Difference]: Start difference. First operand 279 states and 393 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:10:27,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:27,184 INFO L93 Difference]: Finished difference Result 428 states and 617 transitions. [2025-02-05 16:10:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:27,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 151 [2025-02-05 16:10:27,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:27,190 INFO L225 Difference]: With dead ends: 428 [2025-02-05 16:10:27,190 INFO L226 Difference]: Without dead ends: 284 [2025-02-05 16:10:27,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:27,193 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 4 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:27,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 772 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-02-05 16:10:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2025-02-05 16:10:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 224 states have (on average 1.3616071428571428) internal successors, (305), 228 states have internal predecessors, (305), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-02-05 16:10:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 397 transitions. [2025-02-05 16:10:27,220 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 397 transitions. Word has length 151 [2025-02-05 16:10:27,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:27,221 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 397 transitions. [2025-02-05 16:10:27,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:10:27,221 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 397 transitions. [2025-02-05 16:10:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-02-05 16:10:27,222 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:27,224 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:27,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 16:10:27,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 16:10:27,424 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:27,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1662482703, now seen corresponding path program 1 times [2025-02-05 16:10:27,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:27,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43904982] [2025-02-05 16:10:27,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:27,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:27,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-05 16:10:27,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-05 16:10:27,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:27,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2025-02-05 16:10:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43904982] [2025-02-05 16:10:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43904982] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105974313] [2025-02-05 16:10:27,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:27,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:27,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:27,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:27,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 16:10:27,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-05 16:10:27,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-05 16:10:27,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:27,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:27,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:10:27,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-02-05 16:10:27,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105974313] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:27,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-05 16:10:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139807044] [2025-02-05 16:10:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:27,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:27,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:27,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:27,755 INFO L87 Difference]: Start difference. First operand 284 states and 397 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-02-05 16:10:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:27,785 INFO L93 Difference]: Finished difference Result 432 states and 617 transitions. [2025-02-05 16:10:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 159 [2025-02-05 16:10:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:27,788 INFO L225 Difference]: With dead ends: 432 [2025-02-05 16:10:27,788 INFO L226 Difference]: Without dead ends: 283 [2025-02-05 16:10:27,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:27,788 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 5 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:27,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:27,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-02-05 16:10:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2025-02-05 16:10:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 224 states have (on average 1.3482142857142858) internal successors, (302), 227 states have internal predecessors, (302), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-02-05 16:10:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 392 transitions. [2025-02-05 16:10:27,799 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 392 transitions. Word has length 159 [2025-02-05 16:10:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:27,799 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 392 transitions. [2025-02-05 16:10:27,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-02-05 16:10:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 392 transitions. [2025-02-05 16:10:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 16:10:27,800 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:27,801 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:27,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 16:10:28,001 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,SelfDestructingSolverStorable16 [2025-02-05 16:10:28,002 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:28,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1304727926, now seen corresponding path program 1 times [2025-02-05 16:10:28,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:28,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095496677] [2025-02-05 16:10:28,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:28,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 16:10:28,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 16:10:28,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:28,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2025-02-05 16:10:28,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095496677] [2025-02-05 16:10:28,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095496677] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373880348] [2025-02-05 16:10:28,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:28,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:28,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:28,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:28,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 16:10:28,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 16:10:28,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 16:10:28,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:28,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:28,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:10:28,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-02-05 16:10:28,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373880348] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:28,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:28,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:10:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182135699] [2025-02-05 16:10:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:28,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:10:28,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:28,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:10:28,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:28,267 INFO L87 Difference]: Start difference. First operand 283 states and 392 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-02-05 16:10:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:28,296 INFO L93 Difference]: Finished difference Result 430 states and 606 transitions. [2025-02-05 16:10:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:10:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 166 [2025-02-05 16:10:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:28,298 INFO L225 Difference]: With dead ends: 430 [2025-02-05 16:10:28,298 INFO L226 Difference]: Without dead ends: 282 [2025-02-05 16:10:28,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:28,299 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:28,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 508 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:28,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2025-02-05 16:10:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2025-02-05 16:10:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 224 states have (on average 1.34375) internal successors, (301), 226 states have internal predecessors, (301), 44 states have call successors, (44), 13 states have call predecessors, (44), 13 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-05 16:10:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 389 transitions. [2025-02-05 16:10:28,308 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 389 transitions. Word has length 166 [2025-02-05 16:10:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:28,309 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 389 transitions. [2025-02-05 16:10:28,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-02-05 16:10:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 389 transitions. [2025-02-05 16:10:28,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-02-05 16:10:28,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:28,312 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:28,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 16:10:28,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:28,513 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:28,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:28,514 INFO L85 PathProgramCache]: Analyzing trace with hash -902346866, now seen corresponding path program 1 times [2025-02-05 16:10:28,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:28,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276950151] [2025-02-05 16:10:28,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:28,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:28,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-05 16:10:28,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-05 16:10:28,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:28,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2025-02-05 16:10:28,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276950151] [2025-02-05 16:10:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276950151] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:28,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040594817] [2025-02-05 16:10:28,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:28,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:28,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:28,611 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:28,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 16:10:28,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-05 16:10:28,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-05 16:10:28,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:28,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:28,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 16:10:28,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-02-05 16:10:28,798 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:28,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040594817] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:28,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:28,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-05 16:10:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137112852] [2025-02-05 16:10:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:28,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:28,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:28,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:28,799 INFO L87 Difference]: Start difference. First operand 282 states and 389 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 16:10:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:28,868 INFO L93 Difference]: Finished difference Result 642 states and 887 transitions. [2025-02-05 16:10:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 169 [2025-02-05 16:10:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:28,871 INFO L225 Difference]: With dead ends: 642 [2025-02-05 16:10:28,871 INFO L226 Difference]: Without dead ends: 495 [2025-02-05 16:10:28,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:28,872 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 318 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:28,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 725 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2025-02-05 16:10:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 489. [2025-02-05 16:10:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 384 states have (on average 1.359375) internal successors, (522), 386 states have internal predecessors, (522), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2025-02-05 16:10:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 668 transitions. [2025-02-05 16:10:28,889 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 668 transitions. Word has length 169 [2025-02-05 16:10:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:28,891 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 668 transitions. [2025-02-05 16:10:28,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-05 16:10:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 668 transitions. [2025-02-05 16:10:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-02-05 16:10:28,893 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:28,893 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:28,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 16:10:29,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:29,094 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:29,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash -613988335, now seen corresponding path program 1 times [2025-02-05 16:10:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281667439] [2025-02-05 16:10:29,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:29,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:29,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-02-05 16:10:29,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-02-05 16:10:29,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:29,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-02-05 16:10:29,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:29,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281667439] [2025-02-05 16:10:29,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281667439] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:29,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98683240] [2025-02-05 16:10:29,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:29,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:29,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:29,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:29,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 16:10:29,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-02-05 16:10:29,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-02-05 16:10:29,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:29,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:29,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:10:29,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-02-05 16:10:29,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:29,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98683240] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:29,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-05 16:10:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637734391] [2025-02-05 16:10:29,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:29,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:29,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:29,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:29,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:29,425 INFO L87 Difference]: Start difference. First operand 489 states and 668 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:29,494 INFO L93 Difference]: Finished difference Result 783 states and 1088 transitions. [2025-02-05 16:10:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:29,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 200 [2025-02-05 16:10:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:29,498 INFO L225 Difference]: With dead ends: 783 [2025-02-05 16:10:29,499 INFO L226 Difference]: Without dead ends: 489 [2025-02-05 16:10:29,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:29,501 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 31 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:29,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 697 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2025-02-05 16:10:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2025-02-05 16:10:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 384 states have (on average 1.34375) internal successors, (516), 386 states have internal predecessors, (516), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2025-02-05 16:10:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 662 transitions. [2025-02-05 16:10:29,522 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 662 transitions. Word has length 200 [2025-02-05 16:10:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:29,522 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 662 transitions. [2025-02-05 16:10:29,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 662 transitions. [2025-02-05 16:10:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2025-02-05 16:10:29,525 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:29,525 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:29,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 16:10:29,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:29,728 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:29,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:29,729 INFO L85 PathProgramCache]: Analyzing trace with hash 108016224, now seen corresponding path program 1 times [2025-02-05 16:10:29,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:29,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203434436] [2025-02-05 16:10:29,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:29,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:29,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-02-05 16:10:29,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-02-05 16:10:29,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:29,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-02-05 16:10:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203434436] [2025-02-05 16:10:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203434436] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168240796] [2025-02-05 16:10:29,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:29,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:29,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:29,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 16:10:29,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-02-05 16:10:29,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-02-05 16:10:29,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:29,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:29,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:10:29,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2025-02-05 16:10:30,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:30,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168240796] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:30,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:30,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-05 16:10:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117684549] [2025-02-05 16:10:30,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:30,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:30,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:30,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:30,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:30,019 INFO L87 Difference]: Start difference. First operand 489 states and 662 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:30,069 INFO L93 Difference]: Finished difference Result 783 states and 1074 transitions. [2025-02-05 16:10:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 201 [2025-02-05 16:10:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:30,073 INFO L225 Difference]: With dead ends: 783 [2025-02-05 16:10:30,073 INFO L226 Difference]: Without dead ends: 501 [2025-02-05 16:10:30,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:30,074 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 7 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:30,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 705 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2025-02-05 16:10:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2025-02-05 16:10:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 394 states have (on average 1.3451776649746192) internal successors, (530), 396 states have internal predecessors, (530), 73 states have call successors, (73), 33 states have call predecessors, (73), 33 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2025-02-05 16:10:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 676 transitions. [2025-02-05 16:10:30,090 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 676 transitions. Word has length 201 [2025-02-05 16:10:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:30,090 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 676 transitions. [2025-02-05 16:10:30,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 676 transitions. [2025-02-05 16:10:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2025-02-05 16:10:30,092 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:30,092 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:30,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 16:10:30,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:30,293 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:30,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1875704519, now seen corresponding path program 1 times [2025-02-05 16:10:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:30,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405642120] [2025-02-05 16:10:30,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:30,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 202 statements into 1 equivalence classes. [2025-02-05 16:10:30,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 202 of 202 statements. [2025-02-05 16:10:30,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:30,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-02-05 16:10:30,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:30,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405642120] [2025-02-05 16:10:30,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405642120] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:30,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11536618] [2025-02-05 16:10:30,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:30,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:30,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:30,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:30,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 16:10:30,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 202 statements into 1 equivalence classes. [2025-02-05 16:10:30,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 202 of 202 statements. [2025-02-05 16:10:30,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:30,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:30,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 16:10:30,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2025-02-05 16:10:30,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11536618] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:30,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:10:30,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503209418] [2025-02-05 16:10:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:30,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:10:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:30,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:10:30,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:30,628 INFO L87 Difference]: Start difference. First operand 501 states and 676 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 16:10:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:30,669 INFO L93 Difference]: Finished difference Result 1096 states and 1498 transitions. [2025-02-05 16:10:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:10:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 202 [2025-02-05 16:10:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:30,674 INFO L225 Difference]: With dead ends: 1096 [2025-02-05 16:10:30,674 INFO L226 Difference]: Without dead ends: 802 [2025-02-05 16:10:30,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:30,676 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 164 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 528 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 [2025-02-05 16:10:30,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 528 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2025-02-05 16:10:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 621. [2025-02-05 16:10:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 489 states have (on average 1.3456032719836402) internal successors, (658), 495 states have internal predecessors, (658), 88 states have call successors, (88), 43 states have call predecessors, (88), 43 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2025-02-05 16:10:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 834 transitions. [2025-02-05 16:10:30,700 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 834 transitions. Word has length 202 [2025-02-05 16:10:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:30,700 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 834 transitions. [2025-02-05 16:10:30,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 16:10:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 834 transitions. [2025-02-05 16:10:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2025-02-05 16:10:30,702 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:30,702 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:30,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 16:10:30,903 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,SelfDestructingSolverStorable21 [2025-02-05 16:10:30,904 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:30,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash 752615599, now seen corresponding path program 1 times [2025-02-05 16:10:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988574573] [2025-02-05 16:10:30,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:30,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 203 statements into 1 equivalence classes. [2025-02-05 16:10:30,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 203 of 203 statements. [2025-02-05 16:10:30,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:30,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-02-05 16:10:31,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988574573] [2025-02-05 16:10:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988574573] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578973139] [2025-02-05 16:10:31,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:31,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:31,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:31,005 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:31,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 16:10:31,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 203 statements into 1 equivalence classes. [2025-02-05 16:10:31,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 203 of 203 statements. [2025-02-05 16:10:31,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:31,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:31,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 16:10:31,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2025-02-05 16:10:31,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578973139] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:31,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:31,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:10:31,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632597547] [2025-02-05 16:10:31,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:31,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:10:31,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:31,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:10:31,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:31,214 INFO L87 Difference]: Start difference. First operand 621 states and 834 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 16:10:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:31,271 INFO L93 Difference]: Finished difference Result 1373 states and 1862 transitions. [2025-02-05 16:10:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:10:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 203 [2025-02-05 16:10:31,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:31,276 INFO L225 Difference]: With dead ends: 1373 [2025-02-05 16:10:31,276 INFO L226 Difference]: Without dead ends: 992 [2025-02-05 16:10:31,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:31,277 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 168 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 544 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 [2025-02-05 16:10:31,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 544 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2025-02-05 16:10:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 984. [2025-02-05 16:10:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 770 states have (on average 1.3545454545454545) internal successors, (1043), 784 states have internal predecessors, (1043), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 132 states have call predecessors, (142), 142 states have call successors, (142) [2025-02-05 16:10:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1327 transitions. [2025-02-05 16:10:31,314 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1327 transitions. Word has length 203 [2025-02-05 16:10:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:31,315 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1327 transitions. [2025-02-05 16:10:31,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-05 16:10:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1327 transitions. [2025-02-05 16:10:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2025-02-05 16:10:31,317 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:31,317 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:31,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-05 16:10:31,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:31,518 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:31,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash -520198684, now seen corresponding path program 1 times [2025-02-05 16:10:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939141671] [2025-02-05 16:10:31,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:31,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-02-05 16:10:31,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-02-05 16:10:31,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:31,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-02-05 16:10:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939141671] [2025-02-05 16:10:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939141671] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339571259] [2025-02-05 16:10:31,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:31,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:31,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:31,685 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:31,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 16:10:31,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-02-05 16:10:31,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-02-05 16:10:31,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:31,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:31,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 16:10:31,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-02-05 16:10:31,863 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339571259] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:10:31,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673761435] [2025-02-05 16:10:31,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:31,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:10:31,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:31,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:10:31,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:31,864 INFO L87 Difference]: Start difference. First operand 984 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:31,954 INFO L93 Difference]: Finished difference Result 2300 states and 3137 transitions. [2025-02-05 16:10:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:10:31,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 204 [2025-02-05 16:10:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:31,962 INFO L225 Difference]: With dead ends: 2300 [2025-02-05 16:10:31,962 INFO L226 Difference]: Without dead ends: 1596 [2025-02-05 16:10:31,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:31,963 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 175 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 561 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 [2025-02-05 16:10:31,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 561 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2025-02-05 16:10:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1582. [2025-02-05 16:10:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1232 states have (on average 1.3660714285714286) internal successors, (1683), 1260 states have internal predecessors, (1683), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2025-02-05 16:10:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2151 transitions. [2025-02-05 16:10:32,045 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2151 transitions. Word has length 204 [2025-02-05 16:10:32,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:32,046 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 2151 transitions. [2025-02-05 16:10:32,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2151 transitions. [2025-02-05 16:10:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2025-02-05 16:10:32,049 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:32,049 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:32,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 16:10:32,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:32,250 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:32,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1112605315, now seen corresponding path program 1 times [2025-02-05 16:10:32,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:32,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432734434] [2025-02-05 16:10:32,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:32,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-02-05 16:10:32,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-02-05 16:10:32,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:32,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-02-05 16:10:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432734434] [2025-02-05 16:10:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432734434] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209053168] [2025-02-05 16:10:32,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:32,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:32,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 16:10:32,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-02-05 16:10:32,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-02-05 16:10:32,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:32,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:32,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 16:10:32,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2025-02-05 16:10:32,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209053168] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:32,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:32,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-05 16:10:32,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408945639] [2025-02-05 16:10:32,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:32,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:10:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:32,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:10:32,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:32,507 INFO L87 Difference]: Start difference. First operand 1582 states and 2151 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:32,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:32,585 INFO L93 Difference]: Finished difference Result 3011 states and 4105 transitions. [2025-02-05 16:10:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 204 [2025-02-05 16:10:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:32,592 INFO L225 Difference]: With dead ends: 3011 [2025-02-05 16:10:32,592 INFO L226 Difference]: Without dead ends: 1584 [2025-02-05 16:10:32,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:10:32,596 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1015 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 [2025-02-05 16:10:32,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1015 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:32,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2025-02-05 16:10:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1582. [2025-02-05 16:10:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1232 states have (on average 1.3612012987012987) internal successors, (1677), 1260 states have internal predecessors, (1677), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2025-02-05 16:10:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2145 transitions. [2025-02-05 16:10:32,706 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2145 transitions. Word has length 204 [2025-02-05 16:10:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:32,711 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 2145 transitions. [2025-02-05 16:10:32,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2145 transitions. [2025-02-05 16:10:32,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-02-05 16:10:32,713 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:32,713 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:32,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-05 16:10:32,918 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,SelfDestructingSolverStorable24 [2025-02-05 16:10:32,919 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:32,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash -319454510, now seen corresponding path program 1 times [2025-02-05 16:10:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666861167] [2025-02-05 16:10:32,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:32,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:32,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-02-05 16:10:32,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-02-05 16:10:32,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:32,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-02-05 16:10:32,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:32,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666861167] [2025-02-05 16:10:32,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666861167] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:32,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309069367] [2025-02-05 16:10:32,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:32,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:32,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:32,996 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:32,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 16:10:33,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-02-05 16:10:33,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-02-05 16:10:33,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:33,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:33,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:10:33,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 127 proven. 11 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-02-05 16:10:33,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:10:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2025-02-05 16:10:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309069367] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:33,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-05 16:10:33,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2025-02-05 16:10:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920538050] [2025-02-05 16:10:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:33,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:33,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:33,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:33,296 INFO L87 Difference]: Start difference. First operand 1582 states and 2145 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 16:10:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:33,373 INFO L93 Difference]: Finished difference Result 3032 states and 4128 transitions. [2025-02-05 16:10:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:10:33,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 210 [2025-02-05 16:10:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:33,381 INFO L225 Difference]: With dead ends: 3032 [2025-02-05 16:10:33,382 INFO L226 Difference]: Without dead ends: 1573 [2025-02-05 16:10:33,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:33,384 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 34 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:33,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 477 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2025-02-05 16:10:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2025-02-05 16:10:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1226 states have (on average 1.3556280587275693) internal successors, (1662), 1254 states have internal predecessors, (1662), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2025-02-05 16:10:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2124 transitions. [2025-02-05 16:10:33,435 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2124 transitions. Word has length 210 [2025-02-05 16:10:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:33,435 INFO L471 AbstractCegarLoop]: Abstraction has 1573 states and 2124 transitions. [2025-02-05 16:10:33,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-05 16:10:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2124 transitions. [2025-02-05 16:10:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-02-05 16:10:33,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:33,437 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:33,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-05 16:10:33,639 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,SelfDestructingSolverStorable25 [2025-02-05 16:10:33,640 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:33,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1105296871, now seen corresponding path program 1 times [2025-02-05 16:10:33,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:33,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558496523] [2025-02-05 16:10:33,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:33,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 234 statements into 1 equivalence classes. [2025-02-05 16:10:33,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 234 of 234 statements. [2025-02-05 16:10:33,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:33,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2025-02-05 16:10:33,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558496523] [2025-02-05 16:10:33,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558496523] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756218731] [2025-02-05 16:10:33,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:33,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:33,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:33,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:33,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 16:10:33,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 234 statements into 1 equivalence classes. [2025-02-05 16:10:33,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 234 of 234 statements. [2025-02-05 16:10:33,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:33,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:33,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 16:10:33,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2025-02-05 16:10:33,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756218731] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2025-02-05 16:10:33,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566620403] [2025-02-05 16:10:33,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:33,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:10:33,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:33,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:10:33,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:33,909 INFO L87 Difference]: Start difference. First operand 1573 states and 2124 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:33,975 INFO L93 Difference]: Finished difference Result 3040 states and 4121 transitions. [2025-02-05 16:10:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:33,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 234 [2025-02-05 16:10:33,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:33,982 INFO L225 Difference]: With dead ends: 3040 [2025-02-05 16:10:33,982 INFO L226 Difference]: Without dead ends: 1573 [2025-02-05 16:10:33,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:33,985 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:33,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1012 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2025-02-05 16:10:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2025-02-05 16:10:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1226 states have (on average 1.3531810766721044) internal successors, (1659), 1254 states have internal predecessors, (1659), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2025-02-05 16:10:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2121 transitions. [2025-02-05 16:10:34,036 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2121 transitions. Word has length 234 [2025-02-05 16:10:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:34,037 INFO L471 AbstractCegarLoop]: Abstraction has 1573 states and 2121 transitions. [2025-02-05 16:10:34,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-05 16:10:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2121 transitions. [2025-02-05 16:10:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2025-02-05 16:10:34,043 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:34,044 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:34,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-05 16:10:34,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:34,244 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:34,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash 861610560, now seen corresponding path program 1 times [2025-02-05 16:10:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:34,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607567872] [2025-02-05 16:10:34,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:34,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:34,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 239 statements into 1 equivalence classes. [2025-02-05 16:10:34,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 239 of 239 statements. [2025-02-05 16:10:34,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:34,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 81 proven. 72 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2025-02-05 16:10:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607567872] [2025-02-05 16:10:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607567872] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140988360] [2025-02-05 16:10:34,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:34,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:34,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:34,313 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:34,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-05 16:10:34,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 239 statements into 1 equivalence classes. [2025-02-05 16:10:34,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 239 of 239 statements. [2025-02-05 16:10:34,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:34,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:34,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:10:34,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 255 proven. 9 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2025-02-05 16:10:34,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:10:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 90 proven. 63 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2025-02-05 16:10:34,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140988360] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:10:34,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:10:34,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2025-02-05 16:10:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462213742] [2025-02-05 16:10:34,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:10:34,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:10:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:34,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:10:34,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:34,631 INFO L87 Difference]: Start difference. First operand 1573 states and 2121 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 16:10:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:34,717 INFO L93 Difference]: Finished difference Result 3076 states and 4162 transitions. [2025-02-05 16:10:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:34,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2025-02-05 16:10:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:34,724 INFO L225 Difference]: With dead ends: 3076 [2025-02-05 16:10:34,724 INFO L226 Difference]: Without dead ends: 1570 [2025-02-05 16:10:34,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:34,728 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 45 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:34,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 468 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2025-02-05 16:10:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2025-02-05 16:10:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1223 states have (on average 1.3515944399018807) internal successors, (1653), 1251 states have internal predecessors, (1653), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2025-02-05 16:10:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2115 transitions. [2025-02-05 16:10:34,808 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2115 transitions. Word has length 239 [2025-02-05 16:10:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:34,809 INFO L471 AbstractCegarLoop]: Abstraction has 1570 states and 2115 transitions. [2025-02-05 16:10:34,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-05 16:10:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2115 transitions. [2025-02-05 16:10:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2025-02-05 16:10:34,812 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:34,812 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:34,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-05 16:10:35,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-05 16:10:35,013 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:35,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash 359444327, now seen corresponding path program 1 times [2025-02-05 16:10:35,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:35,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059385453] [2025-02-05 16:10:35,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:35,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 266 statements into 1 equivalence classes. [2025-02-05 16:10:35,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 266 of 266 statements. [2025-02-05 16:10:35,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:35,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2025-02-05 16:10:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059385453] [2025-02-05 16:10:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059385453] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:10:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078815314] [2025-02-05 16:10:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:35,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:10:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:35,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:10:35,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:35,515 INFO L87 Difference]: Start difference. First operand 1570 states and 2115 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-02-05 16:10:35,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:35,621 INFO L93 Difference]: Finished difference Result 2400 states and 3462 transitions. [2025-02-05 16:10:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 16:10:35,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 266 [2025-02-05 16:10:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:35,632 INFO L225 Difference]: With dead ends: 2400 [2025-02-05 16:10:35,632 INFO L226 Difference]: Without dead ends: 2398 [2025-02-05 16:10:35,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:35,634 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 116 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:35,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1779 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2025-02-05 16:10:35,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 1618. [2025-02-05 16:10:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1255 states have (on average 1.342629482071713) internal successors, (1685), 1291 states have internal predecessors, (1685), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2025-02-05 16:10:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2163 transitions. [2025-02-05 16:10:35,718 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2163 transitions. Word has length 266 [2025-02-05 16:10:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:35,718 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2163 transitions. [2025-02-05 16:10:35,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-02-05 16:10:35,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2163 transitions. [2025-02-05 16:10:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2025-02-05 16:10:35,720 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:35,720 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:35,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-05 16:10:35,720 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:35,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash 666373643, now seen corresponding path program 1 times [2025-02-05 16:10:35,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070473861] [2025-02-05 16:10:35,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:35,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:35,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-02-05 16:10:35,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-02-05 16:10:35,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:35,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 139 proven. 27 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2025-02-05 16:10:36,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070473861] [2025-02-05 16:10:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070473861] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135398748] [2025-02-05 16:10:36,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:36,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:36,134 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) [2025-02-05 16:10:36,136 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 [2025-02-05 16:10:36,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-02-05 16:10:36,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-02-05 16:10:36,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:36,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:36,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 16:10:36,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 248 proven. 37 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2025-02-05 16:10:36,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:10:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 143 proven. 23 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2025-02-05 16:10:36,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135398748] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:10:36,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:10:36,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-02-05 16:10:36,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493663484] [2025-02-05 16:10:36,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:10:36,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 16:10:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:36,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 16:10:36,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-02-05 16:10:36,770 INFO L87 Difference]: Start difference. First operand 1618 states and 2163 transitions. Second operand has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 14 states have internal predecessors, (148), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2025-02-05 16:10:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:37,279 INFO L93 Difference]: Finished difference Result 3973 states and 5499 transitions. [2025-02-05 16:10:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 16:10:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 14 states have internal predecessors, (148), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 274 [2025-02-05 16:10:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:37,292 INFO L225 Difference]: With dead ends: 3973 [2025-02-05 16:10:37,292 INFO L226 Difference]: Without dead ends: 2631 [2025-02-05 16:10:37,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 539 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2025-02-05 16:10:37,296 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 219 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 4834 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:37,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 4834 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 16:10:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2025-02-05 16:10:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2403. [2025-02-05 16:10:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 1857 states have (on average 1.3295638126009692) internal successors, (2469), 1909 states have internal predecessors, (2469), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2025-02-05 16:10:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3189 transitions. [2025-02-05 16:10:37,409 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3189 transitions. Word has length 274 [2025-02-05 16:10:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:37,410 INFO L471 AbstractCegarLoop]: Abstraction has 2403 states and 3189 transitions. [2025-02-05 16:10:37,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 14 states have internal predecessors, (148), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2025-02-05 16:10:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3189 transitions. [2025-02-05 16:10:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2025-02-05 16:10:37,414 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:37,414 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:37,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-05 16:10:37,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:37,615 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:37,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:37,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1627987660, now seen corresponding path program 1 times [2025-02-05 16:10:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:37,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015318116] [2025-02-05 16:10:37,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:37,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-02-05 16:10:37,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-02-05 16:10:37,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:37,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2025-02-05 16:10:37,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015318116] [2025-02-05 16:10:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015318116] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737122893] [2025-02-05 16:10:37,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:37,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:37,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:37,709 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) [2025-02-05 16:10:37,710 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 [2025-02-05 16:10:37,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-02-05 16:10:37,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-02-05 16:10:37,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:37,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:37,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:10:37,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2025-02-05 16:10:37,891 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737122893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:37,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:37,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-05 16:10:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285042487] [2025-02-05 16:10:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:37,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:37,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:37,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:37,893 INFO L87 Difference]: Start difference. First operand 2403 states and 3189 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 16:10:38,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:38,051 INFO L93 Difference]: Finished difference Result 4642 states and 6257 transitions. [2025-02-05 16:10:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:38,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 274 [2025-02-05 16:10:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:38,063 INFO L225 Difference]: With dead ends: 4642 [2025-02-05 16:10:38,063 INFO L226 Difference]: Without dead ends: 2339 [2025-02-05 16:10:38,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:38,070 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 4 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:38,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 696 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2025-02-05 16:10:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2339. [2025-02-05 16:10:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 1813 states have (on average 1.3121897407611693) internal successors, (2379), 1865 states have internal predecessors, (2379), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2025-02-05 16:10:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3063 transitions. [2025-02-05 16:10:38,193 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3063 transitions. Word has length 274 [2025-02-05 16:10:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:38,194 INFO L471 AbstractCegarLoop]: Abstraction has 2339 states and 3063 transitions. [2025-02-05 16:10:38,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-02-05 16:10:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3063 transitions. [2025-02-05 16:10:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-02-05 16:10:38,197 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:38,197 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:38,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 16:10:38,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:38,398 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:38,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1411264077, now seen corresponding path program 1 times [2025-02-05 16:10:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290289942] [2025-02-05 16:10:38,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:38,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:38,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-02-05 16:10:38,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-02-05 16:10:38,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:38,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2025-02-05 16:10:38,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:38,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290289942] [2025-02-05 16:10:38,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290289942] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:38,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277713567] [2025-02-05 16:10:38,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:38,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:38,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:38,479 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:38,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 16:10:38,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-02-05 16:10:38,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-02-05 16:10:38,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:38,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:38,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:10:38,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-05 16:10:38,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:38,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277713567] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:38,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:38,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-05 16:10:38,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210212931] [2025-02-05 16:10:38,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:38,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:38,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:38,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:38,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:38,659 INFO L87 Difference]: Start difference. First operand 2339 states and 3063 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 16:10:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:38,777 INFO L93 Difference]: Finished difference Result 4425 states and 5899 transitions. [2025-02-05 16:10:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:38,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 277 [2025-02-05 16:10:38,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:38,790 INFO L225 Difference]: With dead ends: 4425 [2025-02-05 16:10:38,790 INFO L226 Difference]: Without dead ends: 2168 [2025-02-05 16:10:38,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:38,797 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:38,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 724 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:10:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2025-02-05 16:10:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2168. [2025-02-05 16:10:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1672 states have (on average 1.305622009569378) internal successors, (2183), 1724 states have internal predecessors, (2183), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2025-02-05 16:10:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2829 transitions. [2025-02-05 16:10:38,874 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2829 transitions. Word has length 277 [2025-02-05 16:10:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:38,875 INFO L471 AbstractCegarLoop]: Abstraction has 2168 states and 2829 transitions. [2025-02-05 16:10:38,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-05 16:10:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2829 transitions. [2025-02-05 16:10:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2025-02-05 16:10:38,877 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:38,877 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:38,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 16:10:39,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:39,078 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:39,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash -567054705, now seen corresponding path program 1 times [2025-02-05 16:10:39,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:39,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636086584] [2025-02-05 16:10:39,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:39,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:39,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 289 statements into 1 equivalence classes. [2025-02-05 16:10:39,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 289 of 289 statements. [2025-02-05 16:10:39,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:39,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 24 proven. 141 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2025-02-05 16:10:40,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:40,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636086584] [2025-02-05 16:10:40,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636086584] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:40,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909618841] [2025-02-05 16:10:40,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:40,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:40,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:40,457 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:40,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-05 16:10:40,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 289 statements into 1 equivalence classes. [2025-02-05 16:10:40,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 289 of 289 statements. [2025-02-05 16:10:40,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:40,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:40,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 16:10:40,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2025-02-05 16:10:40,801 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:40,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909618841] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:40,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:40,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 24 [2025-02-05 16:10:40,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920797835] [2025-02-05 16:10:40,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:40,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 16:10:40,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:40,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 16:10:40,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2025-02-05 16:10:40,803 INFO L87 Difference]: Start difference. First operand 2168 states and 2829 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 16:10:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:41,173 INFO L93 Difference]: Finished difference Result 4798 states and 6268 transitions. [2025-02-05 16:10:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 16:10:41,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 289 [2025-02-05 16:10:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:41,186 INFO L225 Difference]: With dead ends: 4798 [2025-02-05 16:10:41,186 INFO L226 Difference]: Without dead ends: 3192 [2025-02-05 16:10:41,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2025-02-05 16:10:41,191 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 128 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:41,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1879 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:10:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2025-02-05 16:10:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3178. [2025-02-05 16:10:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 2443 states have (on average 1.2988129349160868) internal successors, (3173), 2523 states have internal predecessors, (3173), 467 states have call successors, (467), 267 states have call predecessors, (467), 267 states have return successors, (467), 395 states have call predecessors, (467), 467 states have call successors, (467) [2025-02-05 16:10:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4107 transitions. [2025-02-05 16:10:41,355 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4107 transitions. Word has length 289 [2025-02-05 16:10:41,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:41,355 INFO L471 AbstractCegarLoop]: Abstraction has 3178 states and 4107 transitions. [2025-02-05 16:10:41,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 16:10:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4107 transitions. [2025-02-05 16:10:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-02-05 16:10:41,358 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:41,358 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:41,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-05 16:10:41,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-05 16:10:41,562 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:41,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash -586162388, now seen corresponding path program 1 times [2025-02-05 16:10:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:41,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310803787] [2025-02-05 16:10:41,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:41,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-02-05 16:10:41,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-02-05 16:10:41,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:41,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2025-02-05 16:10:41,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:41,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310803787] [2025-02-05 16:10:41,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310803787] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:41,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:41,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:10:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894034877] [2025-02-05 16:10:41,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:41,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:10:41,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:41,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:10:41,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:41,693 INFO L87 Difference]: Start difference. First operand 3178 states and 4107 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2025-02-05 16:10:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:41,838 INFO L93 Difference]: Finished difference Result 6178 states and 8173 transitions. [2025-02-05 16:10:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:10:41,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 295 [2025-02-05 16:10:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:41,850 INFO L225 Difference]: With dead ends: 6178 [2025-02-05 16:10:41,850 INFO L226 Difference]: Without dead ends: 3502 [2025-02-05 16:10:41,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:10:41,856 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 38 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:41,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 781 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:10:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2025-02-05 16:10:41,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3434. [2025-02-05 16:10:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2651 states have (on average 1.3115805356469257) internal successors, (3477), 2731 states have internal predecessors, (3477), 515 states have call successors, (515), 267 states have call predecessors, (515), 267 states have return successors, (515), 443 states have call predecessors, (515), 515 states have call successors, (515) [2025-02-05 16:10:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4507 transitions. [2025-02-05 16:10:41,976 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4507 transitions. Word has length 295 [2025-02-05 16:10:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:41,976 INFO L471 AbstractCegarLoop]: Abstraction has 3434 states and 4507 transitions. [2025-02-05 16:10:41,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2025-02-05 16:10:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4507 transitions. [2025-02-05 16:10:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-02-05 16:10:41,979 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:41,979 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:41,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-02-05 16:10:41,979 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:41,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash 646113770, now seen corresponding path program 1 times [2025-02-05 16:10:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502394749] [2025-02-05 16:10:41,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:41,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-02-05 16:10:42,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-02-05 16:10:42,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:42,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2025-02-05 16:10:42,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:42,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502394749] [2025-02-05 16:10:42,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502394749] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:42,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807528440] [2025-02-05 16:10:42,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:42,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:42,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:42,175 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:42,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-05 16:10:42,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-02-05 16:10:42,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-02-05 16:10:42,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:42,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:42,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 16:10:42,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2025-02-05 16:10:42,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:42,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807528440] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:42,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:42,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 11 [2025-02-05 16:10:42,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872023472] [2025-02-05 16:10:42,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:42,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 16:10:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:42,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 16:10:42,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:10:42,459 INFO L87 Difference]: Start difference. First operand 3434 states and 4507 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2025-02-05 16:10:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:43,323 INFO L93 Difference]: Finished difference Result 7948 states and 10416 transitions. [2025-02-05 16:10:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 16:10:43,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 295 [2025-02-05 16:10:43,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:43,342 INFO L225 Difference]: With dead ends: 7948 [2025-02-05 16:10:43,342 INFO L226 Difference]: Without dead ends: 5020 [2025-02-05 16:10:43,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2025-02-05 16:10:43,349 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 604 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:43,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 2355 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 16:10:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2025-02-05 16:10:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 4272. [2025-02-05 16:10:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 3293 states have (on average 1.305192833282721) internal successors, (4298), 3389 states have internal predecessors, (4298), 643 states have call successors, (643), 335 states have call predecessors, (643), 335 states have return successors, (643), 555 states have call predecessors, (643), 643 states have call successors, (643) [2025-02-05 16:10:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5584 transitions. [2025-02-05 16:10:43,515 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5584 transitions. Word has length 295 [2025-02-05 16:10:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:43,515 INFO L471 AbstractCegarLoop]: Abstraction has 4272 states and 5584 transitions. [2025-02-05 16:10:43,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2025-02-05 16:10:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5584 transitions. [2025-02-05 16:10:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-02-05 16:10:43,518 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:43,518 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:43,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-05 16:10:43,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-05 16:10:43,719 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:43,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:43,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1089641194, now seen corresponding path program 1 times [2025-02-05 16:10:43,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:43,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594689299] [2025-02-05 16:10:43,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:43,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:43,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-02-05 16:10:43,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-02-05 16:10:43,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:43,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2025-02-05 16:10:43,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:43,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594689299] [2025-02-05 16:10:43,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594689299] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:43,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539881071] [2025-02-05 16:10:43,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:43,932 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:43,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-05 16:10:44,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-02-05 16:10:44,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-02-05 16:10:44,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:44,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:44,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 16:10:44,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2025-02-05 16:10:44,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:10:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539881071] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:10:44,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2025-02-05 16:10:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295849136] [2025-02-05 16:10:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:44,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 16:10:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:44,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 16:10:44,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:10:44,169 INFO L87 Difference]: Start difference. First operand 4272 states and 5584 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 16:10:44,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:44,469 INFO L93 Difference]: Finished difference Result 8164 states and 10673 transitions. [2025-02-05 16:10:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 16:10:44,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 295 [2025-02-05 16:10:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:44,485 INFO L225 Difference]: With dead ends: 8164 [2025-02-05 16:10:44,485 INFO L226 Difference]: Without dead ends: 4386 [2025-02-05 16:10:44,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:10:44,493 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 121 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:44,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1736 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:10:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2025-02-05 16:10:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4144. [2025-02-05 16:10:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 3197 states have (on average 1.2980919612136377) internal successors, (4150), 3289 states have internal predecessors, (4150), 615 states have call successors, (615), 331 states have call predecessors, (615), 331 states have return successors, (615), 531 states have call predecessors, (615), 615 states have call successors, (615) [2025-02-05 16:10:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5380 transitions. [2025-02-05 16:10:44,718 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5380 transitions. Word has length 295 [2025-02-05 16:10:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:44,719 INFO L471 AbstractCegarLoop]: Abstraction has 4144 states and 5380 transitions. [2025-02-05 16:10:44,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-02-05 16:10:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5380 transitions. [2025-02-05 16:10:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-05 16:10:44,723 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:44,723 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:44,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-05 16:10:44,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-05 16:10:44,924 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:44,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 989395654, now seen corresponding path program 1 times [2025-02-05 16:10:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:44,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318452075] [2025-02-05 16:10:44,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:44,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-05 16:10:44,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-05 16:10:44,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:44,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2025-02-05 16:10:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318452075] [2025-02-05 16:10:45,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318452075] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:45,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:45,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257343256] [2025-02-05 16:10:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:45,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:45,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:45,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:45,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:45,053 INFO L87 Difference]: Start difference. First operand 4144 states and 5380 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-02-05 16:10:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:45,363 INFO L93 Difference]: Finished difference Result 6100 states and 7966 transitions. [2025-02-05 16:10:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:45,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 302 [2025-02-05 16:10:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:45,375 INFO L225 Difference]: With dead ends: 6100 [2025-02-05 16:10:45,376 INFO L226 Difference]: Without dead ends: 2742 [2025-02-05 16:10:45,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:45,382 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 441 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:45,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 886 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:10:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2025-02-05 16:10:45,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2714. [2025-02-05 16:10:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2106 states have (on average 1.2763532763532763) internal successors, (2688), 2162 states have internal predecessors, (2688), 399 states have call successors, (399), 208 states have call predecessors, (399), 208 states have return successors, (399), 343 states have call predecessors, (399), 399 states have call successors, (399) [2025-02-05 16:10:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3486 transitions. [2025-02-05 16:10:45,478 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3486 transitions. Word has length 302 [2025-02-05 16:10:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:45,478 INFO L471 AbstractCegarLoop]: Abstraction has 2714 states and 3486 transitions. [2025-02-05 16:10:45,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-02-05 16:10:45,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3486 transitions. [2025-02-05 16:10:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-02-05 16:10:45,483 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:45,483 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:45,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-02-05 16:10:45,483 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:45,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1978073361, now seen corresponding path program 1 times [2025-02-05 16:10:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:45,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471890683] [2025-02-05 16:10:45,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:45,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:45,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 345 statements into 1 equivalence classes. [2025-02-05 16:10:45,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 345 of 345 statements. [2025-02-05 16:10:45,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:45,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 33 proven. 71 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-02-05 16:10:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471890683] [2025-02-05 16:10:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471890683] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449967909] [2025-02-05 16:10:46,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:46,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:46,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:46,450 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:46,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-05 16:10:46,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 345 statements into 1 equivalence classes. [2025-02-05 16:10:46,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 345 of 345 statements. [2025-02-05 16:10:46,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:46,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:46,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 16:10:46,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 198 proven. 108 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2025-02-05 16:10:47,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:10:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 33 proven. 71 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-02-05 16:10:47,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449967909] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:10:47,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:10:47,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 16] total 38 [2025-02-05 16:10:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976841684] [2025-02-05 16:10:47,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:10:47,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-05 16:10:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:47,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-05 16:10:47,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2025-02-05 16:10:47,839 INFO L87 Difference]: Start difference. First operand 2714 states and 3486 transitions. Second operand has 38 states, 36 states have (on average 6.777777777777778) internal successors, (244), 32 states have internal predecessors, (244), 9 states have call successors, (48), 8 states have call predecessors, (48), 18 states have return successors, (52), 12 states have call predecessors, (52), 8 states have call successors, (52) [2025-02-05 16:10:53,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:53,011 INFO L93 Difference]: Finished difference Result 11572 states and 15641 transitions. [2025-02-05 16:10:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-02-05 16:10:53,012 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 6.777777777777778) internal successors, (244), 32 states have internal predecessors, (244), 9 states have call successors, (48), 8 states have call predecessors, (48), 18 states have return successors, (52), 12 states have call predecessors, (52), 8 states have call successors, (52) Word has length 345 [2025-02-05 16:10:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:53,071 INFO L225 Difference]: With dead ends: 11572 [2025-02-05 16:10:53,071 INFO L226 Difference]: Without dead ends: 9644 [2025-02-05 16:10:53,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1543, Invalid=8357, Unknown=0, NotChecked=0, Total=9900 [2025-02-05 16:10:53,078 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 1746 mSDsluCounter, 9299 mSDsCounter, 0 mSdLazyCounter, 6284 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 9923 SdHoareTripleChecker+Invalid, 6971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 6284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:53,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 9923 Invalid, 6971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 6284 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-05 16:10:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9644 states. [2025-02-05 16:10:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9644 to 7124. [2025-02-05 16:10:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 5472 states have (on average 1.287828947368421) internal successors, (7047), 5576 states have internal predecessors, (7047), 1111 states have call successors, (1111), 516 states have call predecessors, (1111), 540 states have return successors, (1159), 1031 states have call predecessors, (1159), 1111 states have call successors, (1159) [2025-02-05 16:10:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 9317 transitions. [2025-02-05 16:10:53,824 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 9317 transitions. Word has length 345 [2025-02-05 16:10:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:53,825 INFO L471 AbstractCegarLoop]: Abstraction has 7124 states and 9317 transitions. [2025-02-05 16:10:53,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 6.777777777777778) internal successors, (244), 32 states have internal predecessors, (244), 9 states have call successors, (48), 8 states have call predecessors, (48), 18 states have return successors, (52), 12 states have call predecessors, (52), 8 states have call successors, (52) [2025-02-05 16:10:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 9317 transitions. [2025-02-05 16:10:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-02-05 16:10:53,834 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:53,834 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:53,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-05 16:10:54,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-05 16:10:54,039 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:54,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2120380430, now seen corresponding path program 1 times [2025-02-05 16:10:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:54,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865332163] [2025-02-05 16:10:54,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:54,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:54,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 345 statements into 1 equivalence classes. [2025-02-05 16:10:54,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 345 of 345 statements. [2025-02-05 16:10:54,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:54,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2025-02-05 16:10:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865332163] [2025-02-05 16:10:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865332163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:54,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:10:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358390271] [2025-02-05 16:10:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:54,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:10:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:54,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:10:54,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:10:54,145 INFO L87 Difference]: Start difference. First operand 7124 states and 9317 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-02-05 16:10:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:54,598 INFO L93 Difference]: Finished difference Result 14481 states and 18973 transitions. [2025-02-05 16:10:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:10:54,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 345 [2025-02-05 16:10:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:54,619 INFO L225 Difference]: With dead ends: 14481 [2025-02-05 16:10:54,620 INFO L226 Difference]: Without dead ends: 7028 [2025-02-05 16:10:54,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:10:54,630 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 26 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:54,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:10:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2025-02-05 16:10:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 7028. [2025-02-05 16:10:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7028 states, 5400 states have (on average 1.2555555555555555) internal successors, (6780), 5504 states have internal predecessors, (6780), 1111 states have call successors, (1111), 516 states have call predecessors, (1111), 516 states have return successors, (1111), 1007 states have call predecessors, (1111), 1111 states have call successors, (1111) [2025-02-05 16:10:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 9002 transitions. [2025-02-05 16:10:55,076 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 9002 transitions. Word has length 345 [2025-02-05 16:10:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:55,077 INFO L471 AbstractCegarLoop]: Abstraction has 7028 states and 9002 transitions. [2025-02-05 16:10:55,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-02-05 16:10:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 9002 transitions. [2025-02-05 16:10:55,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2025-02-05 16:10:55,100 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:55,101 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:55,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-02-05 16:10:55,101 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:55,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -416601984, now seen corresponding path program 1 times [2025-02-05 16:10:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:55,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462973963] [2025-02-05 16:10:55,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:55,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:55,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 350 statements into 1 equivalence classes. [2025-02-05 16:10:55,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 350 of 350 statements. [2025-02-05 16:10:55,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:55,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2025-02-05 16:10:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462973963] [2025-02-05 16:10:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462973963] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605999317] [2025-02-05 16:10:56,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:56,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:10:56,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:10:56,194 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:10:56,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-05 16:10:56,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 350 statements into 1 equivalence classes. [2025-02-05 16:10:56,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 350 of 350 statements. [2025-02-05 16:10:56,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:56,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:56,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-05 16:10:56,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:10:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 161 proven. 32 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2025-02-05 16:10:56,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:10:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2025-02-05 16:10:56,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605999317] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 16:10:56,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-05 16:10:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 7] total 32 [2025-02-05 16:10:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184812621] [2025-02-05 16:10:56,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:56,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 16:10:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:56,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 16:10:56,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2025-02-05 16:10:56,757 INFO L87 Difference]: Start difference. First operand 7028 states and 9002 transitions. Second operand has 9 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2025-02-05 16:10:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:57,248 INFO L93 Difference]: Finished difference Result 15487 states and 20926 transitions. [2025-02-05 16:10:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 16:10:57,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 350 [2025-02-05 16:10:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:57,275 INFO L225 Difference]: With dead ends: 15487 [2025-02-05 16:10:57,276 INFO L226 Difference]: Without dead ends: 9345 [2025-02-05 16:10:57,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 16:10:57,286 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 113 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:57,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2542 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:10:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9345 states. [2025-02-05 16:10:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9345 to 6279. [2025-02-05 16:10:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6279 states, 4824 states have (on average 1.2529021558872304) internal successors, (6044), 4918 states have internal predecessors, (6044), 992 states have call successors, (992), 462 states have call predecessors, (992), 462 states have return successors, (992), 898 states have call predecessors, (992), 992 states have call successors, (992) [2025-02-05 16:10:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6279 states to 6279 states and 8028 transitions. [2025-02-05 16:10:57,721 INFO L78 Accepts]: Start accepts. Automaton has 6279 states and 8028 transitions. Word has length 350 [2025-02-05 16:10:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:10:57,722 INFO L471 AbstractCegarLoop]: Abstraction has 6279 states and 8028 transitions. [2025-02-05 16:10:57,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2025-02-05 16:10:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6279 states and 8028 transitions. [2025-02-05 16:10:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-02-05 16:10:57,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:10:57,730 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:10:57,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-05 16:10:57,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-05 16:10:57,931 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:10:57,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:10:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1287637947, now seen corresponding path program 1 times [2025-02-05 16:10:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:10:57,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565326707] [2025-02-05 16:10:57,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:10:57,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:10:57,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-02-05 16:10:57,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-02-05 16:10:57,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:10:57,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:10:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2025-02-05 16:10:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:10:58,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565326707] [2025-02-05 16:10:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565326707] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:10:58,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:10:58,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-05 16:10:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216328491] [2025-02-05 16:10:58,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:10:58,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 16:10:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:10:58,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 16:10:58,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:10:58,613 INFO L87 Difference]: Start difference. First operand 6279 states and 8028 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2025-02-05 16:10:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:10:59,467 INFO L93 Difference]: Finished difference Result 14261 states and 17981 transitions. [2025-02-05 16:10:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:10:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 355 [2025-02-05 16:10:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:10:59,527 INFO L225 Difference]: With dead ends: 14261 [2025-02-05 16:10:59,528 INFO L226 Difference]: Without dead ends: 9123 [2025-02-05 16:10:59,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:10:59,555 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 69 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:10:59,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1715 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:10:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2025-02-05 16:11:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 7518. [2025-02-05 16:11:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7518 states, 5762 states have (on average 1.2335994446372787) internal successors, (7108), 5884 states have internal predecessors, (7108), 1174 states have call successors, (1174), 581 states have call predecessors, (1174), 581 states have return successors, (1174), 1052 states have call predecessors, (1174), 1174 states have call successors, (1174) [2025-02-05 16:11:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 9456 transitions. [2025-02-05 16:11:00,205 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 9456 transitions. Word has length 355 [2025-02-05 16:11:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:11:00,205 INFO L471 AbstractCegarLoop]: Abstraction has 7518 states and 9456 transitions. [2025-02-05 16:11:00,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2025-02-05 16:11:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 9456 transitions. [2025-02-05 16:11:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2025-02-05 16:11:00,215 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:11:00,215 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:11:00,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-02-05 16:11:00,215 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:11:00,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:11:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1866457044, now seen corresponding path program 1 times [2025-02-05 16:11:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:11:00,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215887743] [2025-02-05 16:11:00,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:11:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:11:00,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-02-05 16:11:00,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-02-05 16:11:00,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:11:00,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:11:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2025-02-05 16:11:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:11:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215887743] [2025-02-05 16:11:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215887743] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:11:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422867442] [2025-02-05 16:11:00,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:11:00,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:11:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:11:00,955 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:11:00,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-05 16:11:01,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-02-05 16:11:01,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-02-05 16:11:01,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:11:01,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:11:01,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 16:11:01,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:11:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 260 proven. 126 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2025-02-05 16:11:02,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:11:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-02-05 16:11:02,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422867442] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:11:02,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:11:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 18] total 43 [2025-02-05 16:11:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220071149] [2025-02-05 16:11:02,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:11:02,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-05 16:11:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:11:02,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-05 16:11:02,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1666, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 16:11:02,680 INFO L87 Difference]: Start difference. First operand 7518 states and 9456 transitions. Second operand has 43 states, 42 states have (on average 7.190476190476191) internal successors, (302), 39 states have internal predecessors, (302), 19 states have call successors, (71), 8 states have call predecessors, (71), 10 states have return successors, (70), 21 states have call predecessors, (70), 18 states have call successors, (70) [2025-02-05 16:11:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:11:32,953 INFO L93 Difference]: Finished difference Result 91665 states and 125674 transitions. [2025-02-05 16:11:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 457 states. [2025-02-05 16:11:32,954 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 7.190476190476191) internal successors, (302), 39 states have internal predecessors, (302), 19 states have call successors, (71), 8 states have call predecessors, (71), 10 states have return successors, (70), 21 states have call predecessors, (70), 18 states have call successors, (70) Word has length 365 [2025-02-05 16:11:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:11:33,611 INFO L225 Difference]: With dead ends: 91665 [2025-02-05 16:11:33,611 INFO L226 Difference]: Without dead ends: 85414 [2025-02-05 16:11:33,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 496 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107561 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=12442, Invalid=235064, Unknown=0, NotChecked=0, Total=247506 [2025-02-05 16:11:33,749 INFO L435 NwaCegarLoop]: 1481 mSDtfsCounter, 7907 mSDsluCounter, 38276 mSDsCounter, 0 mSdLazyCounter, 24146 mSolverCounterSat, 2811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7907 SdHoareTripleChecker+Valid, 39757 SdHoareTripleChecker+Invalid, 26957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2811 IncrementalHoareTripleChecker+Valid, 24146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2025-02-05 16:11:33,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7907 Valid, 39757 Invalid, 26957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2811 Valid, 24146 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2025-02-05 16:11:33,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85414 states. [2025-02-05 16:11:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85414 to 25798. [2025-02-05 16:11:36,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25798 states, 19622 states have (on average 1.2327489552543065) internal successors, (24189), 20206 states have internal predecessors, (24189), 4126 states have call successors, (4126), 2049 states have call predecessors, (4126), 2049 states have return successors, (4126), 3542 states have call predecessors, (4126), 4126 states have call successors, (4126) [2025-02-05 16:11:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25798 states to 25798 states and 32441 transitions. [2025-02-05 16:11:36,791 INFO L78 Accepts]: Start accepts. Automaton has 25798 states and 32441 transitions. Word has length 365 [2025-02-05 16:11:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:11:36,792 INFO L471 AbstractCegarLoop]: Abstraction has 25798 states and 32441 transitions. [2025-02-05 16:11:36,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 7.190476190476191) internal successors, (302), 39 states have internal predecessors, (302), 19 states have call successors, (71), 8 states have call predecessors, (71), 10 states have return successors, (70), 21 states have call predecessors, (70), 18 states have call successors, (70) [2025-02-05 16:11:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 25798 states and 32441 transitions. [2025-02-05 16:11:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2025-02-05 16:11:36,827 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:11:36,827 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:11:36,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-02-05 16:11:37,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:11:37,029 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:11:37,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:11:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash -618876773, now seen corresponding path program 1 times [2025-02-05 16:11:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:11:37,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343662656] [2025-02-05 16:11:37,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:11:37,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:11:37,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-02-05 16:11:37,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-02-05 16:11:37,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:11:37,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:11:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-02-05 16:11:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:11:38,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343662656] [2025-02-05 16:11:38,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343662656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:11:38,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413248249] [2025-02-05 16:11:38,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:11:38,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:11:38,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:11:38,431 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:11:38,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-05 16:11:38,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-02-05 16:11:38,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-02-05 16:11:38,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:11:38,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:11:38,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-05 16:11:38,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:11:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 264 proven. 120 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2025-02-05 16:11:39,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:11:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-02-05 16:11:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413248249] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:11:40,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:11:40,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 18] total 40 [2025-02-05 16:11:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957799860] [2025-02-05 16:11:40,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:11:40,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 16:11:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:11:40,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 16:11:40,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 16:11:40,086 INFO L87 Difference]: Start difference. First operand 25798 states and 32441 transitions. Second operand has 40 states, 39 states have (on average 8.384615384615385) internal successors, (327), 37 states have internal predecessors, (327), 21 states have call successors, (76), 8 states have call predecessors, (76), 10 states have return successors, (75), 22 states have call predecessors, (75), 20 states have call successors, (75)