./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.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 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:08:14,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:08:15,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:08:15,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:08:15,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:08:15,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:08:15,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:08:15,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:08:15,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:08:15,081 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:08:15,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:08:15,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:08:15,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:08:15,082 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:08:15,083 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:08:15,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:08:15,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:08:15,083 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 -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd [2025-02-05 15:08:15,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:08:15,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:08:15,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:08:15,275 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:08:15,276 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:08:15,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2025-02-05 15:08:16,385 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4cf70e2c1/1a246b04bcd54a6691d8b3847f6374af/FLAG33c224468 [2025-02-05 15:08:16,580 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:08:16,581 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2025-02-05 15:08:16,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4cf70e2c1/1a246b04bcd54a6691d8b3847f6374af/FLAG33c224468 [2025-02-05 15:08:16,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4cf70e2c1/1a246b04bcd54a6691d8b3847f6374af [2025-02-05 15:08:16,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:08:16,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:08:16,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:08:16,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:08:16,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:08:16,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:08:16" (1/1) ... [2025-02-05 15:08:16,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549101e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:16, skipping insertion in model container [2025-02-05 15:08:16,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:08:16" (1/1) ... [2025-02-05 15:08:16,976 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:08:17,096 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-scaling/egcd-ll_valuebound5.c[489,502] [2025-02-05 15:08:17,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:08:17,120 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:08:17,127 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-scaling/egcd-ll_valuebound5.c[489,502] [2025-02-05 15:08:17,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:08:17,140 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:08:17,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17 WrapperNode [2025-02-05 15:08:17,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:08:17,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:08:17,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:08:17,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:08:17,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,159 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-02-05 15:08:17,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:08:17,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:08:17,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:08:17,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:08:17,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,172 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 15:08:17,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,174 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:08:17,177 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:08:17,177 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:08:17,177 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:08:17,178 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (1/1) ... [2025-02-05 15:08:17,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:08:17,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:17,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 15:08:17,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 15:08:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:08:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 15:08:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 15:08:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:08:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:08:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:08:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 15:08:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 15:08:17,264 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:08:17,265 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:08:17,368 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-02-05 15:08:17,368 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:08:17,373 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:08:17,374 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:08:17,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:08:17 BoogieIcfgContainer [2025-02-05 15:08:17,374 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:08:17,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:08:17,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:08:17,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:08:17,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:08:16" (1/3) ... [2025-02-05 15:08:17,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57940ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:08:17, skipping insertion in model container [2025-02-05 15:08:17,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:17" (2/3) ... [2025-02-05 15:08:17,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57940ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:08:17, skipping insertion in model container [2025-02-05 15:08:17,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:08:17" (3/3) ... [2025-02-05 15:08:17,379 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2025-02-05 15:08:17,388 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:08:17,389 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll_valuebound5.c that has 3 procedures, 32 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:08:17,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:08:17,437 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;@6aae1fb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:08:17,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:08:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-05 15:08:17,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 15:08:17,443 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:17,443 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:17,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:17,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1874562101, now seen corresponding path program 1 times [2025-02-05 15:08:17,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:17,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57632583] [2025-02-05 15:08:17,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:17,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:17,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:17,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:17,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:08:17,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:17,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57632583] [2025-02-05 15:08:17,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57632583] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:17,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619056759] [2025-02-05 15:08:17,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:17,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:17,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:17,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:17,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 15:08:17,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:17,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:17,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:17,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:17,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 15:08:17,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:08:17,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:17,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619056759] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:17,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:08:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 15:08:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417343256] [2025-02-05 15:08:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:17,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 15:08:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:17,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 15:08:17,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 15:08:17,637 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 15:08:17,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:17,649 INFO L93 Difference]: Finished difference Result 61 states and 97 transitions. [2025-02-05 15:08:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 15:08:17,650 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2025-02-05 15:08:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:17,653 INFO L225 Difference]: With dead ends: 61 [2025-02-05 15:08:17,653 INFO L226 Difference]: Without dead ends: 28 [2025-02-05 15:08:17,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 15:08:17,657 INFO L435 NwaCegarLoop]: 42 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, 42 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 [2025-02-05 15:08:17,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-05 15:08:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-02-05 15:08:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 15:08:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2025-02-05 15:08:17,677 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2025-02-05 15:08:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:17,677 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2025-02-05 15:08:17,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 15:08:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2025-02-05 15:08:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 15:08:17,678 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:17,679 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:17,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 15:08:17,883 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 [2025-02-05 15:08:17,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:17,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash 934835095, now seen corresponding path program 1 times [2025-02-05 15:08:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311416055] [2025-02-05 15:08:17,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:17,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:17,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:17,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:17,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:17,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404922403] [2025-02-05 15:08:17,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:17,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:17,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:17,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:17,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 15:08:17,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:17,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:17,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:17,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:17,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:08:17,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:08:18,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311416055] [2025-02-05 15:08:18,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:18,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404922403] [2025-02-05 15:08:18,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404922403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:18,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:18,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574982471] [2025-02-05 15:08:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:18,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:18,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:18,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:18,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:18,052 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 15:08:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:18,106 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2025-02-05 15:08:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2025-02-05 15:08:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:18,107 INFO L225 Difference]: With dead ends: 44 [2025-02-05 15:08:18,107 INFO L226 Difference]: Without dead ends: 42 [2025-02-05 15:08:18,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:08:18,108 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:18,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 121 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-05 15:08:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2025-02-05 15:08:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-05 15:08:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2025-02-05 15:08:18,115 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2025-02-05 15:08:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:18,115 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2025-02-05 15:08:18,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 15:08:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2025-02-05 15:08:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 15:08:18,115 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:18,115 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:18,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:18,320 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 [2025-02-05 15:08:18,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:18,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1488334121, now seen corresponding path program 1 times [2025-02-05 15:08:18,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:18,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352616956] [2025-02-05 15:08:18,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:18,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:18,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 15:08:18,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 15:08:18,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:18,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:18,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617409134] [2025-02-05 15:08:18,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:18,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:18,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:18,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:18,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 15:08:18,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 15:08:18,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 15:08:18,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:18,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:18,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:08:18,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:08:18,455 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:18,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352616956] [2025-02-05 15:08:18,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617409134] [2025-02-05 15:08:18,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617409134] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:18,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:18,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049943788] [2025-02-05 15:08:18,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:18,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:18,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:18,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:18,458 INFO L87 Difference]: Start difference. First operand 41 states and 58 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) [2025-02-05 15:08:18,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:18,514 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2025-02-05 15:08:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:18,515 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 [2025-02-05 15:08:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:18,518 INFO L225 Difference]: With dead ends: 66 [2025-02-05 15:08:18,519 INFO L226 Difference]: Without dead ends: 64 [2025-02-05 15:08:18,519 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 [2025-02-05 15:08:18,521 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 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 [2025-02-05 15:08:18,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-05 15:08:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2025-02-05 15:08:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-05 15:08:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2025-02-05 15:08:18,532 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2025-02-05 15:08:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:18,532 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2025-02-05 15:08:18,532 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) [2025-02-05 15:08:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2025-02-05 15:08:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 15:08:18,533 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:18,533 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:18,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 15:08:18,737 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 [2025-02-05 15:08:18,737 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:18,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash -144013545, now seen corresponding path program 1 times [2025-02-05 15:08:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082146767] [2025-02-05 15:08:18,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:18,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 15:08:18,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 15:08:18,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:18,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222244899] [2025-02-05 15:08:18,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:18,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:18,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:18,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:18,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 15:08:18,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 15:08:18,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 15:08:18,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:18,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:18,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 15:08:18,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:08:18,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:18,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082146767] [2025-02-05 15:08:18,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222244899] [2025-02-05 15:08:18,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222244899] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:18,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:18,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529502416] [2025-02-05 15:08:18,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:18,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:18,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:18,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:18,848 INFO L87 Difference]: Start difference. First operand 57 states and 83 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-05 15:08:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:18,886 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2025-02-05 15:08:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:18,886 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2025-02-05 15:08:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:18,887 INFO L225 Difference]: With dead ends: 64 [2025-02-05 15:08:18,887 INFO L226 Difference]: Without dead ends: 60 [2025-02-05 15:08:18,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:08:18,888 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:18,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-05 15:08:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-05 15:08:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-05 15:08:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2025-02-05 15:08:18,895 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2025-02-05 15:08:18,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:18,895 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2025-02-05 15:08:18,895 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-05 15:08:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2025-02-05 15:08:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-05 15:08:18,896 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:18,896 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:18,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:19,096 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 [2025-02-05 15:08:19,097 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:19,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash -252058226, now seen corresponding path program 1 times [2025-02-05 15:08:19,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:19,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482472621] [2025-02-05 15:08:19,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:19,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:19,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 15:08:19,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 15:08:19,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:19,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:08:19,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:19,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482472621] [2025-02-05 15:08:19,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482472621] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:19,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:19,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343570215] [2025-02-05 15:08:19,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:19,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:19,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:19,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:19,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:19,234 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-05 15:08:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:19,271 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2025-02-05 15:08:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2025-02-05 15:08:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:19,272 INFO L225 Difference]: With dead ends: 66 [2025-02-05 15:08:19,272 INFO L226 Difference]: Without dead ends: 64 [2025-02-05 15:08:19,272 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 [2025-02-05 15:08:19,273 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 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 [2025-02-05 15:08:19,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-05 15:08:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-02-05 15:08:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-05 15:08:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2025-02-05 15:08:19,287 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2025-02-05 15:08:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:19,287 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2025-02-05 15:08:19,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-05 15:08:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2025-02-05 15:08:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-05 15:08:19,288 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:19,288 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:19,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:08:19,288 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1784111281, now seen corresponding path program 1 times [2025-02-05 15:08:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500278590] [2025-02-05 15:08:19,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:19,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-05 15:08:19,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 15:08:19,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:19,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:19,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154592762] [2025-02-05 15:08:19,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:19,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:19,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:19,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:19,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 15:08:19,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-05 15:08:19,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 15:08:19,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:19,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:19,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:08:19,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-05 15:08:19,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:19,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500278590] [2025-02-05 15:08:19,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154592762] [2025-02-05 15:08:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154592762] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:19,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:19,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:19,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260467361] [2025-02-05 15:08:19,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:19,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:19,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:19,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:19,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:19,448 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 15:08:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:19,488 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2025-02-05 15:08:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:19,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2025-02-05 15:08:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:19,490 INFO L225 Difference]: With dead ends: 80 [2025-02-05 15:08:19,490 INFO L226 Difference]: Without dead ends: 78 [2025-02-05 15:08:19,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:08:19,490 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:19,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 121 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-05 15:08:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2025-02-05 15:08:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-05 15:08:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2025-02-05 15:08:19,506 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2025-02-05 15:08:19,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:19,507 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2025-02-05 15:08:19,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 15:08:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2025-02-05 15:08:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-05 15:08:19,508 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:19,508 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:19,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:19,709 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 [2025-02-05 15:08:19,709 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:19,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1193732526, now seen corresponding path program 1 times [2025-02-05 15:08:19,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:19,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595264372] [2025-02-05 15:08:19,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:19,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-05 15:08:19,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 15:08:19,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:19,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-05 15:08:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595264372] [2025-02-05 15:08:19,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595264372] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477993393] [2025-02-05 15:08:19,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:19,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:19,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:19,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:19,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 15:08:19,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-05 15:08:19,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 15:08:19,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:19,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:19,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:08:19,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-05 15:08:20,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:20,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477993393] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:20,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:08:20,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-02-05 15:08:20,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066345590] [2025-02-05 15:08:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:20,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:08:20,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:20,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:08:20,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:08:20,056 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:08:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:20,123 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2025-02-05 15:08:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:08:20,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2025-02-05 15:08:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:20,125 INFO L225 Difference]: With dead ends: 88 [2025-02-05 15:08:20,126 INFO L226 Difference]: Without dead ends: 84 [2025-02-05 15:08:20,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:08:20,127 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:20,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 147 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-05 15:08:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2025-02-05 15:08:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 50 states have internal predecessors, (55), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-05 15:08:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2025-02-05 15:08:20,134 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 50 [2025-02-05 15:08:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:20,135 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2025-02-05 15:08:20,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 15:08:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2025-02-05 15:08:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-05 15:08:20,135 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:20,135 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:20,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 15:08:20,340 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 [2025-02-05 15:08:20,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:20,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:20,341 INFO L85 PathProgramCache]: Analyzing trace with hash 910156208, now seen corresponding path program 1 times [2025-02-05 15:08:20,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:20,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94184034] [2025-02-05 15:08:20,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:20,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-05 15:08:20,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 15:08:20,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:20,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:20,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82923000] [2025-02-05 15:08:20,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:20,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:20,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:20,368 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:20,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 15:08:20,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-05 15:08:20,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 15:08:20,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:20,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:20,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-05 15:08:20,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:08:20,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-05 15:08:20,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:20,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94184034] [2025-02-05 15:08:20,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:20,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82923000] [2025-02-05 15:08:20,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82923000] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:20,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:08:20,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12 [2025-02-05 15:08:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509702178] [2025-02-05 15:08:20,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:20,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 15:08:20,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:20,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 15:08:20,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:08:20,809 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-02-05 15:08:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:21,101 INFO L93 Difference]: Finished difference Result 133 states and 183 transitions. [2025-02-05 15:08:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 15:08:21,101 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 52 [2025-02-05 15:08:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:21,102 INFO L225 Difference]: With dead ends: 133 [2025-02-05 15:08:21,102 INFO L226 Difference]: Without dead ends: 131 [2025-02-05 15:08:21,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2025-02-05 15:08:21,103 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 58 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:21,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 212 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:08:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-05 15:08:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 109. [2025-02-05 15:08:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 65 states have internal predecessors, (76), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2025-02-05 15:08:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2025-02-05 15:08:21,123 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 142 transitions. Word has length 52 [2025-02-05 15:08:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:21,123 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 142 transitions. [2025-02-05 15:08:21,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-02-05 15:08:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 142 transitions. [2025-02-05 15:08:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-05 15:08:21,124 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:21,124 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:21,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 15:08:21,324 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 [2025-02-05 15:08:21,325 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:21,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash 398552271, now seen corresponding path program 2 times [2025-02-05 15:08:21,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:21,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877434608] [2025-02-05 15:08:21,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:08:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:21,330 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-05 15:08:21,337 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-05 15:08:21,338 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:08:21,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919725694] [2025-02-05 15:08:21,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:08:21,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:21,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:21,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:21,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 15:08:21,366 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-05 15:08:21,381 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-05 15:08:21,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:08:21,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:21,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 15:08:21,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-05 15:08:21,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-05 15:08:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877434608] [2025-02-05 15:08:21,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919725694] [2025-02-05 15:08:21,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919725694] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:21,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:08:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-02-05 15:08:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322698273] [2025-02-05 15:08:21,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:21,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:08:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:21,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:08:21,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:08:21,571 INFO L87 Difference]: Start difference. First operand 109 states and 142 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-05 15:08:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:21,768 INFO L93 Difference]: Finished difference Result 122 states and 160 transitions. [2025-02-05 15:08:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:08:21,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 57 [2025-02-05 15:08:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:21,769 INFO L225 Difference]: With dead ends: 122 [2025-02-05 15:08:21,769 INFO L226 Difference]: Without dead ends: 104 [2025-02-05 15:08:21,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:08:21,770 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:21,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 156 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:08:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-02-05 15:08:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2025-02-05 15:08:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 61 states have internal predecessors, (71), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-05 15:08:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 129 transitions. [2025-02-05 15:08:21,786 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 129 transitions. Word has length 57 [2025-02-05 15:08:21,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:21,786 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 129 transitions. [2025-02-05 15:08:21,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-05 15:08:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 129 transitions. [2025-02-05 15:08:21,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 15:08:21,787 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:21,787 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:21,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:21,992 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 [2025-02-05 15:08:21,992 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:21,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash -864502232, now seen corresponding path program 1 times [2025-02-05 15:08:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190526555] [2025-02-05 15:08:21,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:21,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 15:08:22,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 15:08:22,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:22,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579908124] [2025-02-05 15:08:22,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:22,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:22,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:22,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:22,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 15:08:22,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 15:08:22,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 15:08:22,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:22,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:22,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 15:08:22,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-02-05 15:08:22,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-05 15:08:22,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:22,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190526555] [2025-02-05 15:08:22,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:22,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579908124] [2025-02-05 15:08:22,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579908124] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:22,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:08:22,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-02-05 15:08:22,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998817308] [2025-02-05 15:08:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:22,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:22,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:22,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:22,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:08:22,221 INFO L87 Difference]: Start difference. First operand 101 states and 129 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 15:08:22,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:22,267 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2025-02-05 15:08:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-02-05 15:08:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:22,268 INFO L225 Difference]: With dead ends: 107 [2025-02-05 15:08:22,268 INFO L226 Difference]: Without dead ends: 102 [2025-02-05 15:08:22,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:08:22,269 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 109 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 [2025-02-05 15:08:22,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 109 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-02-05 15:08:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2025-02-05 15:08:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-05 15:08:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2025-02-05 15:08:22,285 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 65 [2025-02-05 15:08:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:22,285 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2025-02-05 15:08:22,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 15:08:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2025-02-05 15:08:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 15:08:22,286 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:22,286 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:22,292 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 [2025-02-05 15:08:22,486 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 [2025-02-05 15:08:22,487 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:22,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1578032345, now seen corresponding path program 1 times [2025-02-05 15:08:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:22,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716591718] [2025-02-05 15:08:22,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:22,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:22,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 15:08:22,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 15:08:22,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:22,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-05 15:08:22,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716591718] [2025-02-05 15:08:22,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716591718] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353929253] [2025-02-05 15:08:22,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:22,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:22,687 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:22,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 15:08:22,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 15:08:22,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 15:08:22,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:22,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:22,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:08:22,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-05 15:08:22,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-05 15:08:22,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353929253] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:22,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:08:22,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-02-05 15:08:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804269265] [2025-02-05 15:08:22,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:22,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 15:08:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:22,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 15:08:22,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:08:22,823 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-05 15:08:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:22,891 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2025-02-05 15:08:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:08:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 68 [2025-02-05 15:08:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:22,892 INFO L225 Difference]: With dead ends: 111 [2025-02-05 15:08:22,892 INFO L226 Difference]: Without dead ends: 0 [2025-02-05 15:08:22,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:08:22,903 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:22,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 88 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-05 15:08:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-05 15:08:22,904 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) [2025-02-05 15:08:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-05 15:08:22,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2025-02-05 15:08:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:22,904 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-05 15:08:22,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-05 15:08:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-05 15:08:22,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-05 15:08:22,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 15:08:22,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 15:08:23,111 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 [2025-02-05 15:08:23,113 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:23,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-05 15:08:36,333 WARN L286 SmtUtils]: Spent 11.54s on a formula simplification. DAG size of input: 67 DAG size of output: 34 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2025-02-05 15:08:37,282 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 15:08:37,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 03:08:37 BoogieIcfgContainer [2025-02-05 15:08:37,294 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 15:08:37,295 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 15:08:37,295 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 15:08:37,295 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 15:08:37,295 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:08:17" (3/4) ... [2025-02-05 15:08:37,296 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-05 15:08:37,302 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-02-05 15:08:37,302 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-05 15:08:37,305 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-05 15:08:37,305 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-05 15:08:37,305 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-05 15:08:37,305 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-05 15:08:37,366 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-05 15:08:37,366 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-05 15:08:37,366 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 15:08:37,368 INFO L158 Benchmark]: Toolchain (without parser) took 20419.25ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 111.7MB in the beginning and 113.7MB in the end (delta: -2.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2025-02-05 15:08:37,369 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory was 125.8MB in the beginning and 125.5MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:08:37,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.15ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 100.5MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:08:37,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.15ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 99.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:08:37,369 INFO L158 Benchmark]: Boogie Preprocessor took 16.23ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 98.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:08:37,369 INFO L158 Benchmark]: IcfgBuilder took 197.19ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 85.9MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 15:08:37,370 INFO L158 Benchmark]: TraceAbstraction took 19918.96ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 85.5MB in the beginning and 120.2MB in the end (delta: -34.7MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2025-02-05 15:08:37,370 INFO L158 Benchmark]: Witness Printer took 71.82ms. Allocated memory is still 176.2MB. Free memory was 120.2MB in the beginning and 113.7MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:08:37,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory was 125.8MB in the beginning and 125.5MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.15ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 100.5MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.15ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 99.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.23ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 98.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 197.19ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 85.9MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19918.96ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 85.5MB in the beginning and 120.2MB in the end (delta: -34.7MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. * Witness Printer took 71.82ms. Allocated memory is still 176.2MB. Free memory was 120.2MB in the beginning and 113.7MB in the end (delta: 6.4MB). 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 143 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 1373 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1004 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 553 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 369 mSDtfsCounter, 553 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 742 GetRequests, 661 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 39 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 985 NumberOfCodeBlocks, 985 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 886 ConstructedInterpolants, 0 QuantifiedInterpolants, 2471 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1176 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 1134/1195 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: 35]: Location Invariant Derived location invariant: (((((((__int128) p * s) == (((__int128) q * r) + 1)) && (1 <= y)) && (y <= 5)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && ((((__int128) r * y) + ((__int128) p * x)) == a)) RESULT: Ultimate proved your program to be correct! [2025-02-05 15:08:37,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE