./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd-ll.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/nla-digbench/egcd-ll.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 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:07:55,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:07:55,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:07:55,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:07:55,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:07:55,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:07:55,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:07:55,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:07:55,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:07:55,363 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:07:55,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:07:55,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:07:55,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:07:55,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:07:55,365 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:07:55,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:07:55,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:07:55,365 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:07:55,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:07:55,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:07:55,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:07:55,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:07:55,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:07:55,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:07:55,367 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:07:55,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:07:55,367 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:07:55,367 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:07:55,367 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:07:55,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:07:55,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:07:55,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:07:55,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:07:55,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:07:55,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:07:55,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:07:55,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:07:55,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:07:55,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:07:55,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:07:55,369 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 -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 [2025-01-09 03:07:55,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:07:55,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:07:55,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:07:55,629 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:07:55,629 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:07:55,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2025-01-09 03:07:56,881 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dbe285895/9e9bc03565ab4cc99372d3e838330bfb/FLAGe76a6122c [2025-01-09 03:07:57,162 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:07:57,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c [2025-01-09 03:07:57,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dbe285895/9e9bc03565ab4cc99372d3e838330bfb/FLAGe76a6122c [2025-01-09 03:07:57,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dbe285895/9e9bc03565ab4cc99372d3e838330bfb [2025-01-09 03:07:57,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:07:57,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:07:57,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:07:57,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:07:57,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:07:57,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d1a6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57, skipping insertion in model container [2025-01-09 03:07:57,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:07:57,349 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/nla-digbench/egcd-ll.c[489,502] [2025-01-09 03:07:57,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:07:57,380 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:07:57,389 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/nla-digbench/egcd-ll.c[489,502] [2025-01-09 03:07:57,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:07:57,411 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:07:57,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57 WrapperNode [2025-01-09 03:07:57,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:07:57,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:07:57,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:07:57,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:07:57,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,446 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2025-01-09 03:07:57,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:07:57,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:07:57,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:07:57,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:07:57,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,463 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 03:07:57,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,466 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:07:57,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:07:57,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:07:57,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:07:57,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (1/1) ... [2025-01-09 03:07:57,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:07:57,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:57,502 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 03:07:57,504 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 03:07:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:07:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 03:07:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 03:07:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:07:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:07:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:07:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:07:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:07:57,575 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:07:57,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:07:57,707 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-01-09 03:07:57,707 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:07:57,717 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:07:57,718 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 03:07:57,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:07:57 BoogieIcfgContainer [2025-01-09 03:07:57,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:07:57,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:07:57,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:07:57,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:07:57,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:07:57" (1/3) ... [2025-01-09 03:07:57,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:07:57, skipping insertion in model container [2025-01-09 03:07:57,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:07:57" (2/3) ... [2025-01-09 03:07:57,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:07:57, skipping insertion in model container [2025-01-09 03:07:57,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:07:57" (3/3) ... [2025-01-09 03:07:57,730 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2025-01-09 03:07:57,743 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:07:57,745 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll.c that has 3 procedures, 28 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 03:07:57,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:07:57,795 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;@482a3974, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:07:57,795 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:07:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-09 03:07:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:07:57,804 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:57,804 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:57,805 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:57,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:57,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1198649393, now seen corresponding path program 1 times [2025-01-09 03:07:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:57,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412740269] [2025-01-09 03:07:57,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:57,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:07:57,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:07:57,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:57,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:07:57,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:57,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412740269] [2025-01-09 03:07:57,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412740269] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:57,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655225803] [2025-01-09 03:07:57,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:57,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:57,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:57,967 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 03:07:57,969 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 03:07:58,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:07:58,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:07:58,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:58,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:58,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 03:07:58,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:07:58,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:07:58,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655225803] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:07:58,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:07:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 03:07:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960046623] [2025-01-09 03:07:58,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:07:58,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 03:07:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:58,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 03:07:58,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:07:58,090 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:07:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:58,110 INFO L93 Difference]: Finished difference Result 53 states and 83 transitions. [2025-01-09 03:07:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 03:07:58,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-01-09 03:07:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:58,119 INFO L225 Difference]: With dead ends: 53 [2025-01-09 03:07:58,120 INFO L226 Difference]: Without dead ends: 24 [2025-01-09 03:07:58,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:07:58,127 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:58,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:07:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-09 03:07:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-09 03:07:58,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 03:07:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2025-01-09 03:07:58,163 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 17 [2025-01-09 03:07:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:58,163 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2025-01-09 03:07:58,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:07:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2025-01-09 03:07:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:07:58,164 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:58,164 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:58,173 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 03:07:58,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 03:07:58,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:58,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash -197503247, now seen corresponding path program 1 times [2025-01-09 03:07:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:58,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425941754] [2025-01-09 03:07:58,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:58,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:07:58,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:07:58,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:58,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:07:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927331973] [2025-01-09 03:07:58,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:58,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:58,403 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 03:07:58,405 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 03:07:58,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:07:58,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:07:58,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:58,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:58,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:07:58,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:58,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:07:58,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425941754] [2025-01-09 03:07:58,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:07:58,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927331973] [2025-01-09 03:07:58,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927331973] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:07:58,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:07:58,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:07:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352576277] [2025-01-09 03:07:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:07:58,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:07:58,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:58,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:07:58,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:07:58,553 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 03:07:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:58,626 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2025-01-09 03:07:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:07:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2025-01-09 03:07:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:58,627 INFO L225 Difference]: With dead ends: 39 [2025-01-09 03:07:58,627 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 03:07:58,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:07:58,628 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:58,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:07:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 03:07:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2025-01-09 03:07:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2025-01-09 03:07:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2025-01-09 03:07:58,644 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2025-01-09 03:07:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:58,645 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2025-01-09 03:07:58,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 03:07:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2025-01-09 03:07:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 03:07:58,646 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:58,647 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:58,655 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 03:07:58,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:58,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:58,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:58,852 INFO L85 PathProgramCache]: Analyzing trace with hash 274695034, now seen corresponding path program 1 times [2025-01-09 03:07:58,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:58,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124994849] [2025-01-09 03:07:58,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:58,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:58,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 03:07:58,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:07:58,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:58,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:07:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191250805] [2025-01-09 03:07:58,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:58,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:58,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:58,890 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 03:07:58,891 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 03:07:58,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 03:07:58,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:07:58,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:58,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:58,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:07:58,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:58,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:07:58,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:58,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124994849] [2025-01-09 03:07:58,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:07:58,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191250805] [2025-01-09 03:07:58,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191250805] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:07:58,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:07:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:07:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926372335] [2025-01-09 03:07:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:07:58,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:07:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:58,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:07:58,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:07:58,987 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 03:07:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:59,053 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2025-01-09 03:07:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:07:59,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2025-01-09 03:07:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:59,054 INFO L225 Difference]: With dead ends: 43 [2025-01-09 03:07:59,054 INFO L226 Difference]: Without dead ends: 41 [2025-01-09 03:07:59,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:07:59,055 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:59,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:07:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-09 03:07:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2025-01-09 03:07:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2025-01-09 03:07:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2025-01-09 03:07:59,069 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 22 [2025-01-09 03:07:59,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:59,070 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2025-01-09 03:07:59,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 03:07:59,070 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2025-01-09 03:07:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:07:59,071 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:59,071 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:59,077 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 03:07:59,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:59,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:59,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1032135599, now seen corresponding path program 1 times [2025-01-09 03:07:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:59,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776647786] [2025-01-09 03:07:59,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:59,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:59,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 03:07:59,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:07:59,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:59,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:07:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433441623] [2025-01-09 03:07:59,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:59,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:59,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:59,308 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 03:07:59,311 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 03:07:59,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 03:07:59,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:07:59,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:59,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:59,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:07:59,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:07:59,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:07:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776647786] [2025-01-09 03:07:59,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:07:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433441623] [2025-01-09 03:07:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433441623] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:07:59,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:07:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:07:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603512431] [2025-01-09 03:07:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:07:59,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:07:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:59,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:07:59,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:07:59,426 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:07:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:59,490 INFO L93 Difference]: Finished difference Result 63 states and 92 transitions. [2025-01-09 03:07:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:07:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2025-01-09 03:07:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:59,495 INFO L225 Difference]: With dead ends: 63 [2025-01-09 03:07:59,495 INFO L226 Difference]: Without dead ends: 59 [2025-01-09 03:07:59,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:07:59,497 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:59,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 99 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:07:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-01-09 03:07:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2025-01-09 03:07:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-01-09 03:07:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2025-01-09 03:07:59,520 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 27 [2025-01-09 03:07:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:59,520 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2025-01-09 03:07:59,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:07:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2025-01-09 03:07:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:07:59,521 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:59,521 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:59,530 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 03:07:59,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:59,721 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:59,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1856853394, now seen corresponding path program 1 times [2025-01-09 03:07:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:59,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090335747] [2025-01-09 03:07:59,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:59,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:07:59,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:07:59,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:59,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:07:59,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090335747] [2025-01-09 03:07:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090335747] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:07:59,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:07:59,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:07:59,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337709480] [2025-01-09 03:07:59,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:07:59,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:07:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:59,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:07:59,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:07:59,896 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 03:07:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:59,964 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2025-01-09 03:07:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:07:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2025-01-09 03:07:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:59,966 INFO L225 Difference]: With dead ends: 65 [2025-01-09 03:07:59,966 INFO L226 Difference]: Without dead ends: 63 [2025-01-09 03:07:59,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:07:59,967 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:59,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:07:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-09 03:07:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2025-01-09 03:07:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-01-09 03:07:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2025-01-09 03:07:59,987 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 33 [2025-01-09 03:07:59,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:59,988 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2025-01-09 03:07:59,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 03:07:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2025-01-09 03:07:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:07:59,989 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:59,989 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:59,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 03:07:59,990 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:59,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1710813021, now seen corresponding path program 1 times [2025-01-09 03:07:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:59,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991707363] [2025-01-09 03:07:59,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:07:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:59,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:08:00,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:08:00,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:00,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:08:00,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017263485] [2025-01-09 03:08:00,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:00,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:00,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:08:00,019 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 03:08:00,030 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 03:08:00,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:08:00,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:08:00,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:00,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:00,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:08:00,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:08:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 03:08:00,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:08:00,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:08:00,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991707363] [2025-01-09 03:08:00,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:08:00,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017263485] [2025-01-09 03:08:00,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017263485] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:08:00,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:08:00,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:08:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642785089] [2025-01-09 03:08:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:08:00,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:08:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:08:00,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:08:00,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:08:00,172 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:08:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:08:00,222 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2025-01-09 03:08:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:08:00,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2025-01-09 03:08:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:08:00,223 INFO L225 Difference]: With dead ends: 73 [2025-01-09 03:08:00,223 INFO L226 Difference]: Without dead ends: 70 [2025-01-09 03:08:00,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:08:00,224 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:08:00,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:08:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-01-09 03:08:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2025-01-09 03:08:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2025-01-09 03:08:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2025-01-09 03:08:00,243 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 34 [2025-01-09 03:08:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:08:00,245 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2025-01-09 03:08:00,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:08:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2025-01-09 03:08:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:08:00,246 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:08:00,246 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:08:00,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 03:08:00,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:00,447 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:08:00,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:08:00,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1512578397, now seen corresponding path program 1 times [2025-01-09 03:08:00,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:08:00,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572103593] [2025-01-09 03:08:00,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:00,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:08:00,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 03:08:00,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:08:00,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:00,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 03:08:00,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:08:00,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572103593] [2025-01-09 03:08:00,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572103593] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:08:00,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582703946] [2025-01-09 03:08:00,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:00,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:00,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:08:00,718 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 03:08:00,721 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 03:08:00,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 03:08:00,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:08:00,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:00,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:00,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:08:00,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:08:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 03:08:00,863 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:08:00,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582703946] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:08:00,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:08:00,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-01-09 03:08:00,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986563957] [2025-01-09 03:08:00,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:08:00,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:08:00,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:08:00,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:08:00,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:08:00,865 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 03:08:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:08:00,961 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2025-01-09 03:08:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:08:00,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2025-01-09 03:08:00,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:08:00,963 INFO L225 Difference]: With dead ends: 81 [2025-01-09 03:08:00,964 INFO L226 Difference]: Without dead ends: 77 [2025-01-09 03:08:00,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:08:00,965 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:08:00,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:08:00,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-01-09 03:08:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2025-01-09 03:08:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 45 states have internal predecessors, (50), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2025-01-09 03:08:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2025-01-09 03:08:00,981 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 38 [2025-01-09 03:08:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:08:00,982 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2025-01-09 03:08:00,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 03:08:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2025-01-09 03:08:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 03:08:00,985 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:08:00,985 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:08:00,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 03:08:01,185 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,SelfDestructingSolverStorable6 [2025-01-09 03:08:01,186 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:08:01,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:08:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash 173869320, now seen corresponding path program 2 times [2025-01-09 03:08:01,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:08:01,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392429004] [2025-01-09 03:08:01,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:08:01,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:08:01,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 03:08:01,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:08:01,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:08:01,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:08:01,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772718651] [2025-01-09 03:08:01,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:08:01,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:01,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:08:01,213 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 03:08:01,215 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 03:08:01,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 03:08:01,265 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:08:01,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:08:01,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:01,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 03:08:01,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:08:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-09 03:08:01,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:08:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 03:08:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:08:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392429004] [2025-01-09 03:08:01,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:08:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772718651] [2025-01-09 03:08:01,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772718651] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:08:01,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:08:01,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2025-01-09 03:08:01,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277116467] [2025-01-09 03:08:01,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:08:01,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:08:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:08:01,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:08:01,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:08:01,637 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 03:08:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:08:01,999 INFO L93 Difference]: Finished difference Result 121 states and 169 transitions. [2025-01-09 03:08:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:08:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 39 [2025-01-09 03:08:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:08:02,001 INFO L225 Difference]: With dead ends: 121 [2025-01-09 03:08:02,001 INFO L226 Difference]: Without dead ends: 119 [2025-01-09 03:08:02,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:08:02,002 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:08:02,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 201 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:08:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-01-09 03:08:02,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2025-01-09 03:08:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 57 states have internal predecessors, (68), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2025-01-09 03:08:02,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2025-01-09 03:08:02,038 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 39 [2025-01-09 03:08:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:08:02,038 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2025-01-09 03:08:02,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 03:08:02,039 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2025-01-09 03:08:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-09 03:08:02,041 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:08:02,041 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:08:02,049 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 03:08:02,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:02,242 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:08:02,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:08:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash 422540293, now seen corresponding path program 1 times [2025-01-09 03:08:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:08:02,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933659049] [2025-01-09 03:08:02,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:08:02,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 03:08:02,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 03:08:02,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:02,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:08:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260090375] [2025-01-09 03:08:02,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:02,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:02,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:08:02,268 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 03:08:02,271 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 03:08:02,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 03:08:02,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 03:08:02,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:02,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:02,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 03:08:02,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:08:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-01-09 03:08:02,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:08:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:08:02,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:08:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933659049] [2025-01-09 03:08:02,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:08:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260090375] [2025-01-09 03:08:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260090375] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:08:02,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:08:02,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2025-01-09 03:08:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827814858] [2025-01-09 03:08:02,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:08:02,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 03:08:02,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:08:02,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 03:08:02,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-01-09 03:08:02,932 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 18 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 03:08:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:08:03,442 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2025-01-09 03:08:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:08:03,443 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 44 [2025-01-09 03:08:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:08:03,444 INFO L225 Difference]: With dead ends: 120 [2025-01-09 03:08:03,444 INFO L226 Difference]: Without dead ends: 102 [2025-01-09 03:08:03,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:08:03,445 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:08:03,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 178 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:08:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-01-09 03:08:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2025-01-09 03:08:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 56 states have internal predecessors, (66), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-01-09 03:08:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 120 transitions. [2025-01-09 03:08:03,482 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 120 transitions. Word has length 44 [2025-01-09 03:08:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:08:03,483 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 120 transitions. [2025-01-09 03:08:03,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 03:08:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 120 transitions. [2025-01-09 03:08:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 03:08:03,484 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:08:03,484 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:08:03,492 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 03:08:03,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:03,685 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:08:03,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:08:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash -542187469, now seen corresponding path program 1 times [2025-01-09 03:08:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:08:03,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980135884] [2025-01-09 03:08:03,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:03,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:08:03,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 03:08:03,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 03:08:03,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:03,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:08:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625902517] [2025-01-09 03:08:03,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:03,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:03,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:08:03,711 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 03:08:03,713 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 03:08:03,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 03:08:03,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 03:08:03,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:03,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:03,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 03:08:03,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:08:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-01-09 03:08:03,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:08:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-01-09 03:08:04,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:08:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980135884] [2025-01-09 03:08:04,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:08:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625902517] [2025-01-09 03:08:04,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625902517] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 03:08:04,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:08:04,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-01-09 03:08:04,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513272597] [2025-01-09 03:08:04,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:08:04,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:08:04,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:08:04,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:08:04,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:08:04,004 INFO L87 Difference]: Start difference. First operand 95 states and 120 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:08:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:08:04,082 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2025-01-09 03:08:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:08:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2025-01-09 03:08:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:08:04,084 INFO L225 Difference]: With dead ends: 101 [2025-01-09 03:08:04,084 INFO L226 Difference]: Without dead ends: 98 [2025-01-09 03:08:04,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:08:04,085 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:08:04,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:08:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-09 03:08:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2025-01-09 03:08:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 03:08:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2025-01-09 03:08:04,112 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 51 [2025-01-09 03:08:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:08:04,112 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2025-01-09 03:08:04,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:08:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2025-01-09 03:08:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-09 03:08:04,113 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:08:04,113 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:08:04,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 03:08:04,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:04,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:08:04,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:08:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1196112149, now seen corresponding path program 1 times [2025-01-09 03:08:04,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:08:04,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460660958] [2025-01-09 03:08:04,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:08:04,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-09 03:08:04,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 03:08:04,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:04,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-01-09 03:08:04,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:08:04,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460660958] [2025-01-09 03:08:04,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460660958] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:08:04,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508009837] [2025-01-09 03:08:04,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:08:04,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:04,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:08:04,505 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 03:08:04,508 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 03:08:04,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-09 03:08:04,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 03:08:04,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:08:04,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:04,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 03:08:04,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:08:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-01-09 03:08:04,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:08:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-01-09 03:08:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508009837] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:08:04,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:08:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2025-01-09 03:08:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546684507] [2025-01-09 03:08:04,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:08:04,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:08:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:08:04,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:08:04,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:08:04,680 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 03:08:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:08:04,797 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2025-01-09 03:08:04,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:08:04,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2025-01-09 03:08:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:08:04,798 INFO L225 Difference]: With dead ends: 108 [2025-01-09 03:08:04,799 INFO L226 Difference]: Without dead ends: 100 [2025-01-09 03:08:04,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:08:04,799 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:08:04,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 125 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:08:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-01-09 03:08:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2025-01-09 03:08:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 56 states have internal predecessors, (62), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-01-09 03:08:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2025-01-09 03:08:04,816 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 55 [2025-01-09 03:08:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:08:04,816 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2025-01-09 03:08:04,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 03:08:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2025-01-09 03:08:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-09 03:08:04,817 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:08:04,817 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:08:04,825 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 03:08:05,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:05,018 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:08:05,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:08:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash -761375542, now seen corresponding path program 2 times [2025-01-09 03:08:05,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:08:05,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208287284] [2025-01-09 03:08:05,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:08:05,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:08:05,024 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 73 statements into 2 equivalence classes. [2025-01-09 03:08:05,038 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 03:08:05,038 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:08:05,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:08:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119064038] [2025-01-09 03:08:05,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:08:05,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:08:05,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:08:05,043 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 03:08:05,045 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 03:08:05,074 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 73 statements into 2 equivalence classes. [2025-01-09 03:08:05,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 03:08:05,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:08:05,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:08:05,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-09 03:08:05,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:08:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-01-09 03:08:05,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:08:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2025-01-09 03:08:05,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:08:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208287284] [2025-01-09 03:08:05,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:08:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119064038] [2025-01-09 03:08:05,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119064038] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:08:05,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:08:05,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2025-01-09 03:08:05,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910957191] [2025-01-09 03:08:05,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:08:05,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:08:05,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:08:05,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:08:05,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:08:05,832 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2025-01-09 03:08:07,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-01-09 03:08:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:08:07,613 INFO L93 Difference]: Finished difference Result 116 states and 143 transitions. [2025-01-09 03:08:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 03:08:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 73 [2025-01-09 03:08:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:08:07,614 INFO L225 Difference]: With dead ends: 116 [2025-01-09 03:08:07,614 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 03:08:07,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:08:07,616 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-01-09 03:08:07,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 210 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-01-09 03:08:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 03:08:07,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 03:08:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:08:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 03:08:07,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2025-01-09 03:08:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:08:07,618 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 03:08:07,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2025-01-09 03:08:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 03:08:07,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 03:08:07,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 03:08:07,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 03:08:07,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 03:08:07,827 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:08:07,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 03:08:17,517 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 03:08:17,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 03:08:17 BoogieIcfgContainer [2025-01-09 03:08:17,533 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 03:08:17,533 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 03:08:17,533 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 03:08:17,533 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 03:08:17,534 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:07:57" (3/4) ... [2025-01-09 03:08:17,536 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 03:08:17,540 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-01-09 03:08:17,540 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-01-09 03:08:17,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-01-09 03:08:17,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 03:08:17,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 03:08:17,544 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 03:08:17,608 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 03:08:17,608 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 03:08:17,609 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 03:08:17,610 INFO L158 Benchmark]: Toolchain (without parser) took 20412.96ms. Allocated memory is still 201.3MB. Free memory was 159.3MB in the beginning and 123.1MB in the end (delta: 36.2MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2025-01-09 03:08:17,610 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 118.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:08:17,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.98ms. Allocated memory is still 201.3MB. Free memory was 159.3MB in the beginning and 148.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:08:17,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.58ms. Allocated memory is still 201.3MB. Free memory was 148.0MB in the beginning and 146.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:08:17,611 INFO L158 Benchmark]: Boogie Preprocessor took 24.16ms. Allocated memory is still 201.3MB. Free memory was 146.6MB in the beginning and 145.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:08:17,611 INFO L158 Benchmark]: RCFGBuilder took 244.89ms. Allocated memory is still 201.3MB. Free memory was 145.4MB in the beginning and 133.8MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 03:08:17,612 INFO L158 Benchmark]: TraceAbstraction took 19810.70ms. Allocated memory is still 201.3MB. Free memory was 133.2MB in the beginning and 129.5MB in the end (delta: 3.8MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2025-01-09 03:08:17,612 INFO L158 Benchmark]: Witness Printer took 75.40ms. Allocated memory is still 201.3MB. Free memory was 129.5MB in the beginning and 123.1MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:08:17,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 118.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.98ms. Allocated memory is still 201.3MB. Free memory was 159.3MB in the beginning and 148.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.58ms. Allocated memory is still 201.3MB. Free memory was 148.0MB in the beginning and 146.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.16ms. Allocated memory is still 201.3MB. Free memory was 146.6MB in the beginning and 145.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 244.89ms. Allocated memory is still 201.3MB. Free memory was 145.4MB in the beginning and 133.8MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19810.70ms. Allocated memory is still 201.3MB. Free memory was 133.2MB in the beginning and 129.5MB in the end (delta: 3.8MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. * Witness Printer took 75.40ms. Allocated memory is still 201.3MB. Free memory was 129.5MB in the beginning and 123.1MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 12, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 1456 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1141 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1015 IncrementalHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 315 mSDtfsCounter, 1015 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 711 GetRequests, 605 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=8, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 43 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 867 NumberOfCodeBlocks, 867 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 3077 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1158 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 1150/1271 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((__int128) p * s) == (((__int128) q * r) + 1)) && (1 <= y)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && (1 <= x)) && ((((__int128) r * y) + ((__int128) p * x)) == a)) RESULT: Ultimate proved your program to be correct! [2025-01-09 03:08:17,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE