./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.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 538775af36be57be36a6cd470d0ff7a3d7714753249a7d4cb9a7b907cdacda78 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:03:17,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:03:17,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:03:17,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:03:17,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:03:17,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:03:17,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:03:17,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:03:17,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:03:17,558 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:03:17,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:03:17,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:03:17,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:03:17,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:03:17,559 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:03:17,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:17,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:17,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:03:17,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:03:17,560 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 -> 538775af36be57be36a6cd470d0ff7a3d7714753249a7d4cb9a7b907cdacda78 [2025-01-09 03:03:17,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:03:17,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:03:17,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:03:17,798 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:03:17,798 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:03:17,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c [2025-01-09 03:03:18,934 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/33ae55f69/fb25fe104def4a00be02d9951f9ba582/FLAG2b6aec10d [2025-01-09 03:03:19,143 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:03:19,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c [2025-01-09 03:03:19,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/33ae55f69/fb25fe104def4a00be02d9951f9ba582/FLAG2b6aec10d [2025-01-09 03:03:19,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/33ae55f69/fb25fe104def4a00be02d9951f9ba582 [2025-01-09 03:03:19,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:03:19,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:03:19,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:03:19,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:03:19,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:03:19,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcaba70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19, skipping insertion in model container [2025-01-09 03:03:19,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,514 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:03:19,613 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/loops-crafted-1/mono-crafted_14.c[319,332] [2025-01-09 03:03:19,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:03:19,632 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:03:19,642 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/loops-crafted-1/mono-crafted_14.c[319,332] [2025-01-09 03:03:19,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:03:19,656 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:03:19,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19 WrapperNode [2025-01-09 03:03:19,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:03:19,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:03:19,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:03:19,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:03:19,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,679 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2025-01-09 03:03:19,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:03:19,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:03:19,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:03:19,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:03:19,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,700 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]. [2025-01-09 03:03:19,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,705 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:03:19,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:03:19,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:03:19,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:03:19,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (1/1) ... [2025-01-09 03:03:19,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:19,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:19,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 03:03:19,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 03:03:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:03:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:03:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:03:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:03:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:03:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:03:19,800 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:03:19,801 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:03:19,871 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-09 03:03:19,872 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:03:19,877 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:03:19,877 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 03:03:19,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:03:19 BoogieIcfgContainer [2025-01-09 03:03:19,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:03:19,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:03:19,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:03:19,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:03:19,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:03:19" (1/3) ... [2025-01-09 03:03:19,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fed93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:03:19, skipping insertion in model container [2025-01-09 03:03:19,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:19" (2/3) ... [2025-01-09 03:03:19,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fed93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:03:19, skipping insertion in model container [2025-01-09 03:03:19,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:03:19" (3/3) ... [2025-01-09 03:03:19,885 INFO L128 eAbstractionObserver]: Analyzing ICFG mono-crafted_14.c [2025-01-09 03:03:19,895 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:03:19,897 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mono-crafted_14.c that has 2 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 03:03:19,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:03:19,949 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;@1b54f0e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:03:19,949 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:03:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 03:03:19,958 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:19,958 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:19,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash 387990400, now seen corresponding path program 1 times [2025-01-09 03:03:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:19,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039192503] [2025-01-09 03:03:19,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:19,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:20,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 03:03:20,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 03:03:20,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:20,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:20,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039192503] [2025-01-09 03:03:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039192503] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:20,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:03:20,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95316343] [2025-01-09 03:03:20,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:20,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:03:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:20,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:03:20,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:20,114 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:20,139 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2025-01-09 03:03:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:03:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-09 03:03:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:20,145 INFO L225 Difference]: With dead ends: 34 [2025-01-09 03:03:20,145 INFO L226 Difference]: Without dead ends: 15 [2025-01-09 03:03:20,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:20,149 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:20,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-09 03:03:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-09 03:03:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 03:03:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2025-01-09 03:03:20,180 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2025-01-09 03:03:20,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:20,180 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-01-09 03:03:20,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2025-01-09 03:03:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 03:03:20,182 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:20,182 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:20,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:03:20,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:20,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash 568070467, now seen corresponding path program 1 times [2025-01-09 03:03:20,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:20,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761765064] [2025-01-09 03:03:20,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:20,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 03:03:20,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 03:03:20,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:20,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:20,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761765064] [2025-01-09 03:03:20,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761765064] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:20,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:20,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:03:20,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239451517] [2025-01-09 03:03:20,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:20,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:03:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:20,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:03:20,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:20,232 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:20,240 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-01-09 03:03:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:03:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-09 03:03:20,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:20,242 INFO L225 Difference]: With dead ends: 24 [2025-01-09 03:03:20,243 INFO L226 Difference]: Without dead ends: 16 [2025-01-09 03:03:20,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:20,243 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:20,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-09 03:03:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-09 03:03:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 03:03:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-01-09 03:03:20,248 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2025-01-09 03:03:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:20,248 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-01-09 03:03:20,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-01-09 03:03:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 03:03:20,248 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:20,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:20,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:03:20,249 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:20,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:20,249 INFO L85 PathProgramCache]: Analyzing trace with hash 356758401, now seen corresponding path program 1 times [2025-01-09 03:03:20,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:20,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737685429] [2025-01-09 03:03:20,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:20,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:20,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 03:03:20,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 03:03:20,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:20,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737685429] [2025-01-09 03:03:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737685429] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154511366] [2025-01-09 03:03:20,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:20,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:20,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:20,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 03:03:20,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 03:03:20,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 03:03:20,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:20,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 03:03:20,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:20,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154511366] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:20,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-01-09 03:03:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475918522] [2025-01-09 03:03:20,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:20,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:03:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:20,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:03:20,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:20,451 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:20,527 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2025-01-09 03:03:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:03:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-09 03:03:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:20,528 INFO L225 Difference]: With dead ends: 34 [2025-01-09 03:03:20,528 INFO L226 Difference]: Without dead ends: 22 [2025-01-09 03:03:20,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:03:20,529 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31 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 [2025-01-09 03:03:20,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 31 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-09 03:03:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-09 03:03:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 03:03:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2025-01-09 03:03:20,533 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2025-01-09 03:03:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:20,533 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2025-01-09 03:03:20,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2025-01-09 03:03:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 03:03:20,534 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:20,534 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:20,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 03:03:20,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:20,735 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:20,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1040688368, now seen corresponding path program 1 times [2025-01-09 03:03:20,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:20,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821255719] [2025-01-09 03:03:20,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:20,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 03:03:20,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:03:20,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:20,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:20,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821255719] [2025-01-09 03:03:20,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821255719] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:20,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763152728] [2025-01-09 03:03:20,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:20,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:20,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:20,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:20,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 03:03:20,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 03:03:20,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:03:20,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:20,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 03:03:20,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:20,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:20,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763152728] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:20,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:20,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 03:03:20,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129416154] [2025-01-09 03:03:20,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:20,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:03:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:20,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:03:20,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:03:20,955 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:20,983 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2025-01-09 03:03:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:03:20,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-01-09 03:03:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:20,984 INFO L225 Difference]: With dead ends: 46 [2025-01-09 03:03:20,984 INFO L226 Difference]: Without dead ends: 30 [2025-01-09 03:03:20,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:03:20,985 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:20,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-01-09 03:03:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-01-09 03:03:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 03:03:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2025-01-09 03:03:20,989 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2025-01-09 03:03:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:20,989 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2025-01-09 03:03:20,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2025-01-09 03:03:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 03:03:20,990 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:20,990 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:20,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 03:03:21,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:21,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:21,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash -886884708, now seen corresponding path program 2 times [2025-01-09 03:03:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:21,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645409544] [2025-01-09 03:03:21,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:21,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:21,202 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:03:21,223 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:03:21,223 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:21,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:21,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:21,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645409544] [2025-01-09 03:03:21,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645409544] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:21,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642201137] [2025-01-09 03:03:21,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:21,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:21,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:21,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:21,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 03:03:21,410 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:03:21,423 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:03:21,423 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:21,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:21,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:03:21,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:21,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:21,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642201137] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:21,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-01-09 03:03:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156385798] [2025-01-09 03:03:21,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:21,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:03:21,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:21,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:03:21,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:03:21,573 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:21,625 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2025-01-09 03:03:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 03:03:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-09 03:03:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:21,628 INFO L225 Difference]: With dead ends: 62 [2025-01-09 03:03:21,628 INFO L226 Difference]: Without dead ends: 46 [2025-01-09 03:03:21,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:03:21,629 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:21,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-09 03:03:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-01-09 03:03:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 03:03:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2025-01-09 03:03:21,634 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 26 [2025-01-09 03:03:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:21,634 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2025-01-09 03:03:21,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2025-01-09 03:03:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-09 03:03:21,635 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:21,635 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:21,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 03:03:21,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:21,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:21,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1918236236, now seen corresponding path program 3 times [2025-01-09 03:03:21,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:21,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005838631] [2025-01-09 03:03:21,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:21,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:21,845 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 17 equivalence classes. [2025-01-09 03:03:21,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 12 of 42 statements. [2025-01-09 03:03:21,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:21,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2025-01-09 03:03:22,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005838631] [2025-01-09 03:03:22,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005838631] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758970197] [2025-01-09 03:03:22,010 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:22,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:22,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:22,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:22,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 03:03:22,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 17 equivalence classes. [2025-01-09 03:03:22,081 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 12 of 42 statements. [2025-01-09 03:03:22,081 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:22,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:22,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:03:22,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2025-01-09 03:03:22,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2025-01-09 03:03:22,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758970197] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:22,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:22,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2025-01-09 03:03:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308956598] [2025-01-09 03:03:22,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:22,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:03:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:22,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:03:22,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:22,318 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 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) [2025-01-09 03:03:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:22,384 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2025-01-09 03:03:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 03:03:22,384 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 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 42 [2025-01-09 03:03:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:22,385 INFO L225 Difference]: With dead ends: 58 [2025-01-09 03:03:22,385 INFO L226 Difference]: Without dead ends: 56 [2025-01-09 03:03:22,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:03:22,386 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:22,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 110 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-01-09 03:03:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2025-01-09 03:03:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2025-01-09 03:03:22,398 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 42 [2025-01-09 03:03:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:22,398 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2025-01-09 03:03:22,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 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) [2025-01-09 03:03:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2025-01-09 03:03:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-09 03:03:22,398 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:22,399 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:22,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 03:03:22,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 03:03:22,603 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:22,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash 590661936, now seen corresponding path program 4 times [2025-01-09 03:03:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:22,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368782193] [2025-01-09 03:03:22,604 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:22,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:22,617 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-01-09 03:03:22,624 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 03:03:22,624 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:22,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 03:03:22,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:22,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368782193] [2025-01-09 03:03:22,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368782193] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:22,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045221468] [2025-01-09 03:03:22,690 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:22,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:22,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:22,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:22,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 03:03:22,717 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-01-09 03:03:22,732 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 03:03:22,733 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:22,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:22,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 03:03:22,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:22,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045221468] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:23,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:23,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17, 17] total 37 [2025-01-09 03:03:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361178267] [2025-01-09 03:03:23,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:23,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 03:03:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:23,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 03:03:23,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=816, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 03:03:23,321 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:23,881 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2025-01-09 03:03:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-09 03:03:23,882 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-01-09 03:03:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:23,884 INFO L225 Difference]: With dead ends: 114 [2025-01-09 03:03:23,885 INFO L226 Difference]: Without dead ends: 92 [2025-01-09 03:03:23,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1566, Invalid=2856, Unknown=0, NotChecked=0, Total=4422 [2025-01-09 03:03:23,889 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:23,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 95 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-01-09 03:03:23,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2025-01-09 03:03:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.075) internal successors, (86), 82 states have internal predecessors, (86), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2025-01-09 03:03:23,901 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 43 [2025-01-09 03:03:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:23,901 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2025-01-09 03:03:23,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2025-01-09 03:03:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-01-09 03:03:23,902 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:23,903 INFO L218 NwaCegarLoop]: trace histogram [32, 30, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:23,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:24,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:24,107 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:24,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:24,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1821296000, now seen corresponding path program 5 times [2025-01-09 03:03:24,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:24,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38599236] [2025-01-09 03:03:24,108 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:24,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:24,119 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 33 equivalence classes. [2025-01-09 03:03:24,144 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) and asserted 77 of 77 statements. [2025-01-09 03:03:24,145 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2025-01-09 03:03:24,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:03:25,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:25,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38599236] [2025-01-09 03:03:25,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38599236] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:25,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840820499] [2025-01-09 03:03:25,002 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:25,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:25,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:25,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:25,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 03:03:25,039 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 33 equivalence classes. [2025-01-09 03:03:25,071 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) and asserted 77 of 77 statements. [2025-01-09 03:03:25,071 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2025-01-09 03:03:25,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:25,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 03:03:25,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:03:25,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:03:26,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840820499] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:26,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:26,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2025-01-09 03:03:26,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589979437] [2025-01-09 03:03:26,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:26,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-09 03:03:26,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:26,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-09 03:03:26,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 03:03:26,274 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 64 states, 64 states have (on average 2.109375) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:26,474 INFO L93 Difference]: Finished difference Result 174 states and 216 transitions. [2025-01-09 03:03:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-09 03:03:26,475 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-01-09 03:03:26,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:26,476 INFO L225 Difference]: With dead ends: 174 [2025-01-09 03:03:26,477 INFO L226 Difference]: Without dead ends: 150 [2025-01-09 03:03:26,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 03:03:26,481 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:26,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:26,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-01-09 03:03:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2025-01-09 03:03:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.0416666666666667) internal successors, (150), 146 states have internal predecessors, (150), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 155 transitions. [2025-01-09 03:03:26,502 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 155 transitions. Word has length 77 [2025-01-09 03:03:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:26,502 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 155 transitions. [2025-01-09 03:03:26,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 155 transitions. [2025-01-09 03:03:26,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-01-09 03:03:26,504 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:26,504 INFO L218 NwaCegarLoop]: trace histogram [64, 62, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:26,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:26,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 03:03:26,705 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:26,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash 315424032, now seen corresponding path program 6 times [2025-01-09 03:03:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:26,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051097695] [2025-01-09 03:03:26,705 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:26,726 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 141 statements into 65 equivalence classes. [2025-01-09 03:03:26,741 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 25 of 141 statements. [2025-01-09 03:03:26,741 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 03:03:26,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4111 backedges. 190 proven. 15 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-01-09 03:03:26,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:26,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051097695] [2025-01-09 03:03:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051097695] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:26,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270796212] [2025-01-09 03:03:26,813 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:26,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:26,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:26,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:26,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 03:03:26,862 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 141 statements into 65 equivalence classes. [2025-01-09 03:03:26,876 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 25 of 141 statements. [2025-01-09 03:03:26,876 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 03:03:26,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:26,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:03:26,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4111 backedges. 190 proven. 15 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-01-09 03:03:27,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4111 backedges. 190 proven. 15 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-01-09 03:03:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270796212] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:27,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:27,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-09 03:03:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668893305] [2025-01-09 03:03:27,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:27,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:03:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:27,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:03:27,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:03:27,308 INFO L87 Difference]: Start difference. First operand 150 states and 155 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:27,352 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2025-01-09 03:03:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:03:27,353 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2025-01-09 03:03:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:27,354 INFO L225 Difference]: With dead ends: 177 [2025-01-09 03:03:27,354 INFO L226 Difference]: Without dead ends: 164 [2025-01-09 03:03:27,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:03:27,355 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:27,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-01-09 03:03:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 158. [2025-01-09 03:03:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.0394736842105263) internal successors, (158), 154 states have internal predecessors, (158), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2025-01-09 03:03:27,371 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 141 [2025-01-09 03:03:27,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:27,372 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2025-01-09 03:03:27,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2025-01-09 03:03:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-01-09 03:03:27,373 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:27,373 INFO L218 NwaCegarLoop]: trace histogram [64, 62, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:27,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 03:03:27,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:27,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:27,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1797959904, now seen corresponding path program 7 times [2025-01-09 03:03:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:27,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085418646] [2025-01-09 03:03:27,575 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:27,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-01-09 03:03:27,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-01-09 03:03:27,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:27,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 03:03:30,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085418646] [2025-01-09 03:03:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085418646] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667059536] [2025-01-09 03:03:30,205 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:30,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:30,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 03:03:30,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-01-09 03:03:30,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-01-09 03:03:30,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:30,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:30,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 126 conjuncts are in the unsatisfiable core [2025-01-09 03:03:30,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 03:03:30,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 03:03:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667059536] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:33,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:33,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2025-01-09 03:03:33,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506130110] [2025-01-09 03:03:33,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:33,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2025-01-09 03:03:33,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:33,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2025-01-09 03:03:33,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-01-09 03:03:33,759 INFO L87 Difference]: Start difference. First operand 158 states and 163 transitions. Second operand has 129 states, 129 states have (on average 2.062015503875969) internal successors, (266), 129 states have internal predecessors, (266), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:34,048 INFO L93 Difference]: Finished difference Result 318 states and 392 transitions. [2025-01-09 03:03:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-01-09 03:03:34,050 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.062015503875969) internal successors, (266), 129 states have internal predecessors, (266), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2025-01-09 03:03:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:34,052 INFO L225 Difference]: With dead ends: 318 [2025-01-09 03:03:34,052 INFO L226 Difference]: Without dead ends: 286 [2025-01-09 03:03:34,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-01-09 03:03:34,057 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:34,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-01-09 03:03:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2025-01-09 03:03:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 280 states have (on average 1.0214285714285714) internal successors, (286), 282 states have internal predecessors, (286), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 291 transitions. [2025-01-09 03:03:34,075 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 291 transitions. Word has length 149 [2025-01-09 03:03:34,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:34,076 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 291 transitions. [2025-01-09 03:03:34,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.062015503875969) internal successors, (266), 129 states have internal predecessors, (266), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:34,076 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 291 transitions. [2025-01-09 03:03:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-01-09 03:03:34,078 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:34,078 INFO L218 NwaCegarLoop]: trace histogram [128, 126, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:34,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:34,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:34,279 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:34,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1088912992, now seen corresponding path program 8 times [2025-01-09 03:03:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482417984] [2025-01-09 03:03:34,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:34,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:34,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 277 statements into 2 equivalence classes. [2025-01-09 03:03:34,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 277 of 277 statements. [2025-01-09 03:03:34,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:34,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16475 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 03:03:42,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:42,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482417984] [2025-01-09 03:03:42,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482417984] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:42,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437817803] [2025-01-09 03:03:42,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:42,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:42,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 03:03:42,964 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 277 statements into 2 equivalence classes. [2025-01-09 03:03:43,033 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 277 of 277 statements. [2025-01-09 03:03:43,033 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:43,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:43,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 254 conjuncts are in the unsatisfiable core [2025-01-09 03:03:43,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16475 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 03:03:43,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16475 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 03:03:55,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437817803] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:55,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:55,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 257 [2025-01-09 03:03:55,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328742798] [2025-01-09 03:03:55,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:55,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2025-01-09 03:03:55,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:55,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2025-01-09 03:03:55,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2025-01-09 03:03:55,452 INFO L87 Difference]: Start difference. First operand 286 states and 291 transitions. Second operand has 257 states, 257 states have (on average 2.0311284046692606) internal successors, (522), 257 states have internal predecessors, (522), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:56,271 INFO L93 Difference]: Finished difference Result 574 states and 712 transitions. [2025-01-09 03:03:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2025-01-09 03:03:56,276 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 2.0311284046692606) internal successors, (522), 257 states have internal predecessors, (522), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2025-01-09 03:03:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:56,278 INFO L225 Difference]: With dead ends: 574 [2025-01-09 03:03:56,279 INFO L226 Difference]: Without dead ends: 542 [2025-01-09 03:03:56,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2025-01-09 03:03:56,282 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:56,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-01-09 03:03:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2025-01-09 03:03:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 536 states have (on average 1.0111940298507462) internal successors, (542), 538 states have internal predecessors, (542), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 547 transitions. [2025-01-09 03:03:56,309 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 547 transitions. Word has length 277 [2025-01-09 03:03:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:56,310 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 547 transitions. [2025-01-09 03:03:56,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 2.0311284046692606) internal successors, (522), 257 states have internal predecessors, (522), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 547 transitions. [2025-01-09 03:03:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2025-01-09 03:03:56,315 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:56,315 INFO L218 NwaCegarLoop]: trace histogram [256, 254, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:56,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 03:03:56,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:56,519 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:56,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1919933664, now seen corresponding path program 9 times [2025-01-09 03:03:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:56,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147286703] [2025-01-09 03:03:56,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:56,557 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 533 statements into 257 equivalence classes. [2025-01-09 03:03:56,565 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 28 of 533 statements. [2025-01-09 03:03:56,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:03:56,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 65627 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64353 trivial. 0 not checked. [2025-01-09 03:03:56,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147286703] [2025-01-09 03:03:56,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147286703] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457751844] [2025-01-09 03:03:56,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:56,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:56,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:56,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:56,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 03:03:56,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 533 statements into 257 equivalence classes. [2025-01-09 03:03:56,708 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 28 of 533 statements. [2025-01-09 03:03:56,708 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:03:56,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:56,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 03:03:56,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 65627 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64353 trivial. 0 not checked. [2025-01-09 03:03:56,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 65627 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64353 trivial. 0 not checked. [2025-01-09 03:03:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457751844] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:56,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:56,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-09 03:03:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884368158] [2025-01-09 03:03:56,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:56,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:03:56,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:56,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:03:56,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:56,753 INFO L87 Difference]: Start difference. First operand 542 states and 547 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:56,786 INFO L93 Difference]: Finished difference Result 577 states and 592 transitions. [2025-01-09 03:03:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:03:56,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 533 [2025-01-09 03:03:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:56,790 INFO L225 Difference]: With dead ends: 577 [2025-01-09 03:03:56,791 INFO L226 Difference]: Without dead ends: 550 [2025-01-09 03:03:56,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:56,792 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:56,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 33 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-01-09 03:03:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2025-01-09 03:03:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 544 states have (on average 1.0183823529411764) internal successors, (554), 546 states have internal predecessors, (554), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:03:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 559 transitions. [2025-01-09 03:03:56,820 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 559 transitions. Word has length 533 [2025-01-09 03:03:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:56,820 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 559 transitions. [2025-01-09 03:03:56,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 559 transitions. [2025-01-09 03:03:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2025-01-09 03:03:56,826 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:56,827 INFO L218 NwaCegarLoop]: trace histogram [260, 254, 13, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:56,833 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 [2025-01-09 03:03:57,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 03:03:57,028 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:57,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash -914952244, now seen corresponding path program 10 times [2025-01-09 03:03:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:57,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787778494] [2025-01-09 03:03:57,028 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:57,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:57,057 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 541 statements into 2 equivalence classes. [2025-01-09 03:03:57,082 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 541 of 541 statements. [2025-01-09 03:03:57,082 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:57,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 67691 backedges. 2830 proven. 91 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2025-01-09 03:03:57,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:57,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787778494] [2025-01-09 03:03:57,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787778494] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:57,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350665343] [2025-01-09 03:03:57,626 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:57,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:57,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:57,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:57,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 03:03:57,792 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 541 statements into 2 equivalence classes. [2025-01-09 03:03:57,968 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 541 of 541 statements. [2025-01-09 03:03:57,968 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:57,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:57,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 510 conjuncts are in the unsatisfiable core [2025-01-09 03:03:58,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:04:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 67691 backedges. 2805 proven. 64770 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-01-09 03:04:15,492 INFO L312 TraceCheckSpWp]: Computing backward predicates...