./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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/termination-numeric/rec_counter3.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 09:00:47,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 09:00:47,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-02-08 09:00:47,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 09:00:47,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 09:00:47,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 09:00:47,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 09:00:47,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 09:00:47,384 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 09:00:47,384 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 09:00:47,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 09:00:47,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 09:00:47,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 09:00:47,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 09:00:47,384 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 09:00:47,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 09:00:47,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 09:00:47,385 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 09:00:47,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 09:00:47,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 09:00:47,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 09:00:47,387 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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2025-02-08 09:00:47,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 09:00:47,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 09:00:47,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 09:00:47,598 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 09:00:47,598 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 09:00:47,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2025-02-08 09:00:48,761 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2628f2ba4/4920e1928cd849a9bab96eac9cc36b56/FLAG504f65d37 [2025-02-08 09:00:49,019 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 09:00:49,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2025-02-08 09:00:49,026 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2628f2ba4/4920e1928cd849a9bab96eac9cc36b56/FLAG504f65d37 [2025-02-08 09:00:49,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2628f2ba4/4920e1928cd849a9bab96eac9cc36b56 [2025-02-08 09:00:49,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 09:00:49,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 09:00:49,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 09:00:49,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 09:00:49,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 09:00:49,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79150c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49, skipping insertion in model container [2025-02-08 09:00:49,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 09:00:49,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 09:00:49,178 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 09:00:49,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 09:00:49,196 INFO L204 MainTranslator]: Completed translation [2025-02-08 09:00:49,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49 WrapperNode [2025-02-08 09:00:49,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 09:00:49,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 09:00:49,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 09:00:49,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 09:00:49,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,214 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2025-02-08 09:00:49,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 09:00:49,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 09:00:49,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 09:00:49,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 09:00:49,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,221 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,224 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-08 09:00:49,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,227 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 09:00:49,232 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 09:00:49,232 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 09:00:49,232 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 09:00:49,233 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (1/1) ... [2025-02-08 09:00:49,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 09:00:49,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:49,262 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) [2025-02-08 09:00:49,265 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 [2025-02-08 09:00:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2025-02-08 09:00:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2025-02-08 09:00:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 09:00:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 09:00:49,312 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 09:00:49,313 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 09:00:49,378 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7: havoc ~res~0, ~rescopy~0; [2025-02-08 09:00:49,400 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-02-08 09:00:49,400 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 09:00:49,406 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 09:00:49,406 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 09:00:49,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 09:00:49 BoogieIcfgContainer [2025-02-08 09:00:49,407 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 09:00:49,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 09:00:49,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 09:00:49,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 09:00:49,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 09:00:49" (1/3) ... [2025-02-08 09:00:49,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178486e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 09:00:49, skipping insertion in model container [2025-02-08 09:00:49,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:00:49" (2/3) ... [2025-02-08 09:00:49,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178486e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 09:00:49, skipping insertion in model container [2025-02-08 09:00:49,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 09:00:49" (3/3) ... [2025-02-08 09:00:49,413 INFO L128 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2025-02-08 09:00:49,423 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 09:00:49,424 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rec_counter3.c that has 2 procedures, 27 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-02-08 09:00:49,458 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 09:00:49,467 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;@73ed1440, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 09:00:49,467 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 09:00:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.625) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 09:00:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 09:00:49,474 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:49,474 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 09:00:49,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:49,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1715027122, now seen corresponding path program 1 times [2025-02-08 09:00:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950268925] [2025-02-08 09:00:49,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:49,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 09:00:49,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 09:00:49,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:49,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:00:49,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950268925] [2025-02-08 09:00:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950268925] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:00:49,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:00:49,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 09:00:49,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636683071] [2025-02-08 09:00:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:00:49,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 09:00:49,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:49,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 09:00:49,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 09:00:49,613 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.625) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 09:00:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:49,667 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2025-02-08 09:00:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 09:00:49,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 09:00:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:49,673 INFO L225 Difference]: With dead ends: 52 [2025-02-08 09:00:49,673 INFO L226 Difference]: Without dead ends: 38 [2025-02-08 09:00:49,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 09:00:49,676 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:49,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 90 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-08 09:00:49,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2025-02-08 09:00:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.565217391304348) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 09:00:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2025-02-08 09:00:49,698 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 6 [2025-02-08 09:00:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:49,699 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2025-02-08 09:00:49,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 09:00:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2025-02-08 09:00:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 09:00:49,699 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:49,699 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:49,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 09:00:49,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:49,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1626233214, now seen corresponding path program 1 times [2025-02-08 09:00:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:49,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835439810] [2025-02-08 09:00:49,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:49,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 09:00:49,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 09:00:49,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:49,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:00:49,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:49,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835439810] [2025-02-08 09:00:49,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835439810] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:00:49,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:00:49,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 09:00:49,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64031133] [2025-02-08 09:00:49,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:00:49,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 09:00:49,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:49,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 09:00:49,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 09:00:49,739 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 09:00:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:49,770 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2025-02-08 09:00:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 09:00:49,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 09:00:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:49,772 INFO L225 Difference]: With dead ends: 35 [2025-02-08 09:00:49,772 INFO L226 Difference]: Without dead ends: 34 [2025-02-08 09:00:49,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 09:00:49,773 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:49,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-08 09:00:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2025-02-08 09:00:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 09:00:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2025-02-08 09:00:49,779 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 7 [2025-02-08 09:00:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:49,779 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2025-02-08 09:00:49,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 09:00:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2025-02-08 09:00:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 09:00:49,779 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:49,780 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:49,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 09:00:49,780 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:49,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash 654917553, now seen corresponding path program 1 times [2025-02-08 09:00:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:49,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078601848] [2025-02-08 09:00:49,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:49,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:49,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 09:00:49,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 09:00:49,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:49,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:00:49,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:49,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078601848] [2025-02-08 09:00:49,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078601848] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:49,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496913101] [2025-02-08 09:00:49,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:49,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:49,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:49,859 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) [2025-02-08 09:00:49,862 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 [2025-02-08 09:00:49,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 09:00:49,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 09:00:49,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:49,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:49,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 09:00:49,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:00:49,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:00:50,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496913101] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:50,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:50,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-08 09:00:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127189170] [2025-02-08 09:00:50,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:50,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 09:00:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:50,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 09:00:50,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-02-08 09:00:50,042 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 09:00:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:50,118 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2025-02-08 09:00:50,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 09:00:50,118 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-08 09:00:50,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:50,119 INFO L225 Difference]: With dead ends: 38 [2025-02-08 09:00:50,119 INFO L226 Difference]: Without dead ends: 37 [2025-02-08 09:00:50,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2025-02-08 09:00:50,120 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 89 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:50,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 62 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-08 09:00:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-02-08 09:00:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.434782608695652) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 09:00:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2025-02-08 09:00:50,125 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2025-02-08 09:00:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:50,125 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2025-02-08 09:00:50,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 09:00:50,126 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2025-02-08 09:00:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 09:00:50,126 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:50,126 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:50,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 09:00:50,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:50,330 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:50,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -577679278, now seen corresponding path program 1 times [2025-02-08 09:00:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547909865] [2025-02-08 09:00:50,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:50,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:50,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 09:00:50,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 09:00:50,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:50,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 09:00:50,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:50,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547909865] [2025-02-08 09:00:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547909865] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:00:50,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:00:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 09:00:50,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877690471] [2025-02-08 09:00:50,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:00:50,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 09:00:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:50,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 09:00:50,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 09:00:50,369 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:50,396 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2025-02-08 09:00:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 09:00:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-02-08 09:00:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:50,397 INFO L225 Difference]: With dead ends: 31 [2025-02-08 09:00:50,397 INFO L226 Difference]: Without dead ends: 30 [2025-02-08 09:00:50,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 09:00:50,398 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:50,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-02-08 09:00:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-02-08 09:00:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 09:00:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-02-08 09:00:50,401 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2025-02-08 09:00:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:50,401 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-02-08 09:00:50,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-02-08 09:00:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 09:00:50,402 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:50,402 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:50,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 09:00:50,402 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:50,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash -577679251, now seen corresponding path program 1 times [2025-02-08 09:00:50,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:50,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956451546] [2025-02-08 09:00:50,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:50,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:50,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 09:00:50,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 09:00:50,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:50,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 09:00:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:50,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956451546] [2025-02-08 09:00:50,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956451546] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:00:50,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:00:50,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 09:00:50,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774051040] [2025-02-08 09:00:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:00:50,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 09:00:50,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:50,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 09:00:50,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 09:00:50,433 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:50,439 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2025-02-08 09:00:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 09:00:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-02-08 09:00:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:50,440 INFO L225 Difference]: With dead ends: 30 [2025-02-08 09:00:50,440 INFO L226 Difference]: Without dead ends: 29 [2025-02-08 09:00:50,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 09:00:50,441 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:50,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-08 09:00:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-02-08 09:00:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 09:00:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2025-02-08 09:00:50,444 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 15 [2025-02-08 09:00:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:50,445 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2025-02-08 09:00:50,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2025-02-08 09:00:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 09:00:50,445 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:50,445 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:50,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 09:00:50,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:50,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash -728188458, now seen corresponding path program 1 times [2025-02-08 09:00:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:50,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828961953] [2025-02-08 09:00:50,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:50,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 09:00:50,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 09:00:50,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:50,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 09:00:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828961953] [2025-02-08 09:00:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828961953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:00:50,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:00:50,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 09:00:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895573810] [2025-02-08 09:00:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:00:50,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 09:00:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:50,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 09:00:50,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 09:00:50,497 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:50,510 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2025-02-08 09:00:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 09:00:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2025-02-08 09:00:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:50,511 INFO L225 Difference]: With dead ends: 51 [2025-02-08 09:00:50,511 INFO L226 Difference]: Without dead ends: 35 [2025-02-08 09:00:50,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 09:00:50,511 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:50,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-08 09:00:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-02-08 09:00:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 09:00:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2025-02-08 09:00:50,518 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2025-02-08 09:00:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:50,518 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2025-02-08 09:00:50,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2025-02-08 09:00:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 09:00:50,519 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:50,519 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:50,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 09:00:50,519 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:50,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash -728187625, now seen corresponding path program 1 times [2025-02-08 09:00:50,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:50,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968486042] [2025-02-08 09:00:50,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:50,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:50,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 09:00:50,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 09:00:50,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:50,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 09:00:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968486042] [2025-02-08 09:00:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968486042] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:00:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:00:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 09:00:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641632982] [2025-02-08 09:00:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:00:50,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 09:00:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:50,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 09:00:50,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 09:00:50,549 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:50,565 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2025-02-08 09:00:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 09:00:50,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2025-02-08 09:00:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:50,566 INFO L225 Difference]: With dead ends: 42 [2025-02-08 09:00:50,566 INFO L226 Difference]: Without dead ends: 37 [2025-02-08 09:00:50,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 09:00:50,567 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:50,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-08 09:00:50,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-08 09:00:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 09:00:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2025-02-08 09:00:50,573 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 16 [2025-02-08 09:00:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:50,573 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2025-02-08 09:00:50,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2025-02-08 09:00:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-08 09:00:50,574 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:50,574 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:50,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 09:00:50,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:50,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:50,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2042337693, now seen corresponding path program 1 times [2025-02-08 09:00:50,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598255768] [2025-02-08 09:00:50,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:50,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:50,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 09:00:50,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 09:00:50,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:50,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 09:00:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598255768] [2025-02-08 09:00:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598255768] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095825034] [2025-02-08 09:00:50,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:50,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:50,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:50,679 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) [2025-02-08 09:00:50,680 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 [2025-02-08 09:00:50,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 09:00:50,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 09:00:50,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:50,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:50,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 09:00:50,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 09:00:50,753 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 09:00:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095825034] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:00:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 09:00:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2025-02-08 09:00:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110902272] [2025-02-08 09:00:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:00:50,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 09:00:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:50,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 09:00:50,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-08 09:00:50,755 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 09:00:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:50,770 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2025-02-08 09:00:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 09:00:50,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2025-02-08 09:00:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:50,771 INFO L225 Difference]: With dead ends: 37 [2025-02-08 09:00:50,771 INFO L226 Difference]: Without dead ends: 36 [2025-02-08 09:00:50,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-08 09:00:50,772 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:50,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-08 09:00:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-08 09:00:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 09:00:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2025-02-08 09:00:50,776 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 27 [2025-02-08 09:00:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:50,776 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2025-02-08 09:00:50,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 09:00:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2025-02-08 09:00:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-08 09:00:50,777 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:50,777 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:00:50,783 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 [2025-02-08 09:00:50,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:50,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:50,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:50,982 INFO L85 PathProgramCache]: Analyzing trace with hash 775477934, now seen corresponding path program 1 times [2025-02-08 09:00:50,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:50,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950323385] [2025-02-08 09:00:50,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:50,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 09:00:51,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 09:00:51,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:51,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 09:00:51,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:51,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950323385] [2025-02-08 09:00:51,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950323385] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:51,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231951825] [2025-02-08 09:00:51,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:00:51,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:51,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:51,124 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) [2025-02-08 09:00:51,127 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 [2025-02-08 09:00:51,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 09:00:51,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 09:00:51,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:51,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:51,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 09:00:51,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-08 09:00:51,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-08 09:00:51,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231951825] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:51,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:51,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2025-02-08 09:00:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674707364] [2025-02-08 09:00:51,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:51,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 09:00:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:51,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 09:00:51,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-02-08 09:00:51,319 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-08 09:00:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:51,370 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2025-02-08 09:00:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 09:00:51,371 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2025-02-08 09:00:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:51,372 INFO L225 Difference]: With dead ends: 91 [2025-02-08 09:00:51,372 INFO L226 Difference]: Without dead ends: 69 [2025-02-08 09:00:51,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2025-02-08 09:00:51,376 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:51,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 119 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-08 09:00:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2025-02-08 09:00:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 09:00:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2025-02-08 09:00:51,389 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 30 [2025-02-08 09:00:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:51,389 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2025-02-08 09:00:51,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-08 09:00:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2025-02-08 09:00:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 09:00:51,390 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:51,390 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 09:00:51,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 09:00:51,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:51,591 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:51,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:51,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1502303225, now seen corresponding path program 2 times [2025-02-08 09:00:51,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:51,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843771566] [2025-02-08 09:00:51,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:51,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:51,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-02-08 09:00:51,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 09:00:51,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:51,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-08 09:00:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843771566] [2025-02-08 09:00:51,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843771566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:51,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490740404] [2025-02-08 09:00:51,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:51,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:51,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:51,663 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) [2025-02-08 09:00:51,667 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 [2025-02-08 09:00:51,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-02-08 09:00:51,713 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 09:00:51,713 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:51,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:51,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 09:00:51,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-08 09:00:51,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-08 09:00:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490740404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:52,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:52,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 19 [2025-02-08 09:00:52,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444797749] [2025-02-08 09:00:52,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:52,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 09:00:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:52,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 09:00:52,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-02-08 09:00:52,209 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 09:00:52,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:52,348 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2025-02-08 09:00:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 09:00:52,349 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2025-02-08 09:00:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:52,350 INFO L225 Difference]: With dead ends: 132 [2025-02-08 09:00:52,350 INFO L226 Difference]: Without dead ends: 86 [2025-02-08 09:00:52,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 113 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2025-02-08 09:00:52,351 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:52,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-02-08 09:00:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2025-02-08 09:00:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 09:00:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2025-02-08 09:00:52,360 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 66 [2025-02-08 09:00:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:52,360 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2025-02-08 09:00:52,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 09:00:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2025-02-08 09:00:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 09:00:52,362 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:52,362 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-02-08 09:00:52,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 09:00:52,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 09:00:52,569 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:52,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 50658197, now seen corresponding path program 3 times [2025-02-08 09:00:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:52,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701020257] [2025-02-08 09:00:52,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:52,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:52,580 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 75 statements into 6 equivalence classes. [2025-02-08 09:00:52,586 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 75 statements. [2025-02-08 09:00:52,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 09:00:52,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-02-08 09:00:52,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701020257] [2025-02-08 09:00:52,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701020257] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868533595] [2025-02-08 09:00:52,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:52,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:52,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:52,647 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) [2025-02-08 09:00:52,653 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 [2025-02-08 09:00:52,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 75 statements into 6 equivalence classes. [2025-02-08 09:00:52,688 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 75 statements. [2025-02-08 09:00:52,688 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 09:00:52,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:52,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 09:00:52,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-02-08 09:00:52,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-02-08 09:00:52,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868533595] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:52,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:52,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-08 09:00:52,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106320358] [2025-02-08 09:00:52,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:52,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 09:00:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:52,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 09:00:52,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-02-08 09:00:52,949 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:53,001 INFO L93 Difference]: Finished difference Result 144 states and 171 transitions. [2025-02-08 09:00:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 09:00:53,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-08 09:00:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:53,003 INFO L225 Difference]: With dead ends: 144 [2025-02-08 09:00:53,003 INFO L226 Difference]: Without dead ends: 139 [2025-02-08 09:00:53,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-02-08 09:00:53,005 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:53,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-02-08 09:00:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 87. [2025-02-08 09:00:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.141025641025641) internal successors, (89), 78 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 09:00:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2025-02-08 09:00:53,021 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 75 [2025-02-08 09:00:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:53,021 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2025-02-08 09:00:53,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:00:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2025-02-08 09:00:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-08 09:00:53,022 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:53,022 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-02-08 09:00:53,029 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 [2025-02-08 09:00:53,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 09:00:53,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:53,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:53,223 INFO L85 PathProgramCache]: Analyzing trace with hash -746525737, now seen corresponding path program 4 times [2025-02-08 09:00:53,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:53,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055710790] [2025-02-08 09:00:53,223 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:00:53,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:53,233 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 84 statements into 2 equivalence classes. [2025-02-08 09:00:53,255 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-02-08 09:00:53,255 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:00:53,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 129 proven. 19 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-02-08 09:00:53,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:53,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055710790] [2025-02-08 09:00:53,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055710790] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:53,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339602340] [2025-02-08 09:00:53,571 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:00:53,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:53,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:53,579 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) [2025-02-08 09:00:53,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 09:00:53,608 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 84 statements into 2 equivalence classes. [2025-02-08 09:00:53,627 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-02-08 09:00:53,627 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:00:53,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:53,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 09:00:53,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 80 proven. 35 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-02-08 09:00:53,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 80 proven. 35 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-02-08 09:00:54,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339602340] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:54,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:54,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 40 [2025-02-08 09:00:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012413066] [2025-02-08 09:00:54,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:54,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-08 09:00:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:54,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-08 09:00:54,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1298, Unknown=0, NotChecked=0, Total=1560 [2025-02-08 09:00:54,168 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 09:00:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:54,340 INFO L93 Difference]: Finished difference Result 310 states and 373 transitions. [2025-02-08 09:00:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 09:00:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 84 [2025-02-08 09:00:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:54,342 INFO L225 Difference]: With dead ends: 310 [2025-02-08 09:00:54,342 INFO L226 Difference]: Without dead ends: 234 [2025-02-08 09:00:54,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2025-02-08 09:00:54,344 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:54,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 163 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:54,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-02-08 09:00:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 156. [2025-02-08 09:00:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 145 states have (on average 1.1448275862068966) internal successors, (166), 145 states have internal predecessors, (166), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 8 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 09:00:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 177 transitions. [2025-02-08 09:00:54,361 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 177 transitions. Word has length 84 [2025-02-08 09:00:54,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:54,361 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 177 transitions. [2025-02-08 09:00:54,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 09:00:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 177 transitions. [2025-02-08 09:00:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-08 09:00:54,363 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:54,363 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-02-08 09:00:54,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 09:00:54,564 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,SelfDestructingSolverStorable11 [2025-02-08 09:00:54,565 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:54,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1480178363, now seen corresponding path program 5 times [2025-02-08 09:00:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236099741] [2025-02-08 09:00:54,565 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:00:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:54,572 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 105 statements into 12 equivalence classes. [2025-02-08 09:00:54,586 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 80 of 105 statements. [2025-02-08 09:00:54,586 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-08 09:00:54,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 169 proven. 8 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2025-02-08 09:00:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236099741] [2025-02-08 09:00:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236099741] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502275106] [2025-02-08 09:00:54,689 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:00:54,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:54,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:54,693 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) [2025-02-08 09:00:54,695 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 [2025-02-08 09:00:54,720 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 105 statements into 12 equivalence classes. [2025-02-08 09:00:54,738 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 80 of 105 statements. [2025-02-08 09:00:54,738 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-08 09:00:54,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:54,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 09:00:54,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 169 proven. 8 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2025-02-08 09:00:54,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 170 proven. 7 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2025-02-08 09:00:54,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502275106] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:54,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:54,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-02-08 09:00:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383798481] [2025-02-08 09:00:54,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:54,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 09:00:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:54,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 09:00:54,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-08 09:00:54,905 INFO L87 Difference]: Start difference. First operand 156 states and 177 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 09:00:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:54,975 INFO L93 Difference]: Finished difference Result 235 states and 269 transitions. [2025-02-08 09:00:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 09:00:54,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 105 [2025-02-08 09:00:54,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:54,979 INFO L225 Difference]: With dead ends: 235 [2025-02-08 09:00:54,979 INFO L226 Difference]: Without dead ends: 144 [2025-02-08 09:00:54,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 202 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-08 09:00:54,980 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:54,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-08 09:00:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2025-02-08 09:00:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 134 states have (on average 1.1194029850746268) internal successors, (150), 134 states have internal predecessors, (150), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 09:00:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2025-02-08 09:00:55,022 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 105 [2025-02-08 09:00:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:55,022 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2025-02-08 09:00:55,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 09:00:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2025-02-08 09:00:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-08 09:00:55,023 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:55,024 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-02-08 09:00:55,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 09:00:55,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:55,225 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:55,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash 834738215, now seen corresponding path program 6 times [2025-02-08 09:00:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889504664] [2025-02-08 09:00:55,225 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:00:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:55,230 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 118 statements into 12 equivalence classes. [2025-02-08 09:00:55,237 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 71 of 118 statements. [2025-02-08 09:00:55,237 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 09:00:55,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 192 proven. 87 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-02-08 09:00:55,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889504664] [2025-02-08 09:00:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889504664] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997577359] [2025-02-08 09:00:55,335 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:00:55,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:55,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:55,337 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) [2025-02-08 09:00:55,338 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 [2025-02-08 09:00:55,365 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 118 statements into 12 equivalence classes. [2025-02-08 09:00:55,379 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 71 of 118 statements. [2025-02-08 09:00:55,380 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 09:00:55,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:55,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 09:00:55,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 192 proven. 87 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-02-08 09:00:55,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 192 proven. 87 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-02-08 09:00:55,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997577359] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:55,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:55,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2025-02-08 09:00:55,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355642821] [2025-02-08 09:00:55,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:55,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 09:00:55,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:55,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 09:00:55,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2025-02-08 09:00:55,669 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 22 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 09:00:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:55,854 INFO L93 Difference]: Finished difference Result 332 states and 379 transitions. [2025-02-08 09:00:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 09:00:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 118 [2025-02-08 09:00:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:55,855 INFO L225 Difference]: With dead ends: 332 [2025-02-08 09:00:55,855 INFO L226 Difference]: Without dead ends: 257 [2025-02-08 09:00:55,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 09:00:55,857 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:55,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-02-08 09:00:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 153. [2025-02-08 09:00:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 143 states have (on average 1.1398601398601398) internal successors, (163), 143 states have internal predecessors, (163), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 09:00:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2025-02-08 09:00:55,868 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 118 [2025-02-08 09:00:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:55,868 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2025-02-08 09:00:55,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 09:00:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2025-02-08 09:00:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-08 09:00:55,869 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:55,869 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-02-08 09:00:55,875 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 [2025-02-08 09:00:56,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:56,074 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:56,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 908634501, now seen corresponding path program 7 times [2025-02-08 09:00:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349824151] [2025-02-08 09:00:56,074 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:00:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:56,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-08 09:00:56,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-08 09:00:56,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:56,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 135 proven. 6 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2025-02-08 09:00:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349824151] [2025-02-08 09:00:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349824151] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:56,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186276762] [2025-02-08 09:00:56,222 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:00:56,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:56,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:56,223 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) [2025-02-08 09:00:56,225 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 [2025-02-08 09:00:56,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-02-08 09:00:56,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-02-08 09:00:56,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:56,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:56,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 09:00:56,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 136 proven. 5 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2025-02-08 09:00:56,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 136 proven. 5 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2025-02-08 09:00:56,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186276762] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:56,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:56,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2025-02-08 09:00:56,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539347294] [2025-02-08 09:00:56,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:56,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 09:00:56,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:56,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 09:00:56,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 09:00:56,469 INFO L87 Difference]: Start difference. First operand 153 states and 173 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 09:00:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:56,512 INFO L93 Difference]: Finished difference Result 271 states and 309 transitions. [2025-02-08 09:00:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 09:00:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 123 [2025-02-08 09:00:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:56,513 INFO L225 Difference]: With dead ends: 271 [2025-02-08 09:00:56,513 INFO L226 Difference]: Without dead ends: 153 [2025-02-08 09:00:56,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 237 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 09:00:56,514 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:56,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:00:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-02-08 09:00:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2025-02-08 09:00:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 143 states have (on average 1.132867132867133) internal successors, (162), 143 states have internal predecessors, (162), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 09:00:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2025-02-08 09:00:56,526 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 123 [2025-02-08 09:00:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:56,527 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2025-02-08 09:00:56,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 09:00:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2025-02-08 09:00:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-08 09:00:56,528 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:56,528 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1] [2025-02-08 09:00:56,534 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 [2025-02-08 09:00:56,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:56,732 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:56,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:56,733 INFO L85 PathProgramCache]: Analyzing trace with hash 301939214, now seen corresponding path program 8 times [2025-02-08 09:00:56,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:56,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946559993] [2025-02-08 09:00:56,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:56,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:56,738 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 137 statements into 2 equivalence classes. [2025-02-08 09:00:56,751 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 09:00:56,753 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:56,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 6 proven. 686 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2025-02-08 09:00:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:57,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946559993] [2025-02-08 09:00:57,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946559993] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:57,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391554128] [2025-02-08 09:00:57,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:57,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:57,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:57,105 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) [2025-02-08 09:00:57,107 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 [2025-02-08 09:00:57,135 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 137 statements into 2 equivalence classes. [2025-02-08 09:00:57,158 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 09:00:57,158 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:57,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:57,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 09:00:57,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 488 proven. 197 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2025-02-08 09:00:57,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 488 proven. 197 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2025-02-08 09:00:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391554128] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:58,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:58,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 25] total 31 [2025-02-08 09:00:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615542245] [2025-02-08 09:00:58,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:58,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-08 09:00:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:58,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-08 09:00:58,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2025-02-08 09:00:58,197 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 25 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 7 states have call predecessors, (8), 1 states have call successors, (8) [2025-02-08 09:00:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:58,763 INFO L93 Difference]: Finished difference Result 361 states and 412 transitions. [2025-02-08 09:00:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-08 09:00:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 25 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 7 states have call predecessors, (8), 1 states have call successors, (8) Word has length 137 [2025-02-08 09:00:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:58,764 INFO L225 Difference]: With dead ends: 361 [2025-02-08 09:00:58,764 INFO L226 Difference]: Without dead ends: 246 [2025-02-08 09:00:58,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 241 SyntacticMatches, 22 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1812 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=724, Invalid=4532, Unknown=0, NotChecked=0, Total=5256 [2025-02-08 09:00:58,766 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:58,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 90 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-02-08 09:00:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 186. [2025-02-08 09:00:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 174 states have (on average 1.1264367816091954) internal successors, (196), 174 states have internal predecessors, (196), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 9 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-08 09:00:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2025-02-08 09:00:58,779 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 137 [2025-02-08 09:00:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:58,779 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2025-02-08 09:00:58,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 25 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 7 states have call predecessors, (8), 1 states have call successors, (8) [2025-02-08 09:00:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2025-02-08 09:00:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-02-08 09:00:58,780 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:58,780 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1] [2025-02-08 09:00:58,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 09:00:58,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 09:00:58,985 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:58,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash -565143897, now seen corresponding path program 9 times [2025-02-08 09:00:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812329654] [2025-02-08 09:00:58,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:58,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:58,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 154 statements into 12 equivalence classes. [2025-02-08 09:00:59,005 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 108 of 154 statements. [2025-02-08 09:00:59,005 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 09:00:59,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 336 proven. 518 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2025-02-08 09:00:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812329654] [2025-02-08 09:00:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812329654] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:59,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844727139] [2025-02-08 09:00:59,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:59,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:59,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:59,197 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:00:59,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 09:00:59,238 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 154 statements into 12 equivalence classes. [2025-02-08 09:00:59,258 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 108 of 154 statements. [2025-02-08 09:00:59,258 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 09:00:59,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:59,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 09:00:59,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 336 proven. 518 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2025-02-08 09:00:59,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 336 proven. 518 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2025-02-08 09:01:00,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844727139] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:00,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:00,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2025-02-08 09:01:00,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696282339] [2025-02-08 09:01:00,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:00,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 09:01:00,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:00,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 09:01:00,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2025-02-08 09:01:00,055 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-08 09:01:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:00,633 INFO L93 Difference]: Finished difference Result 563 states and 646 transitions. [2025-02-08 09:01:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-02-08 09:01:00,634 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 154 [2025-02-08 09:01:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:00,635 INFO L225 Difference]: With dead ends: 563 [2025-02-08 09:01:00,635 INFO L226 Difference]: Without dead ends: 414 [2025-02-08 09:01:00,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1062, Invalid=4340, Unknown=0, NotChecked=0, Total=5402 [2025-02-08 09:01:00,638 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:00,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:01:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-08 09:01:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 276. [2025-02-08 09:01:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 259 states have (on average 1.138996138996139) internal successors, (295), 259 states have internal predecessors, (295), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-08 09:01:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 312 transitions. [2025-02-08 09:01:00,657 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 312 transitions. Word has length 154 [2025-02-08 09:01:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:00,657 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 312 transitions. [2025-02-08 09:01:00,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-08 09:01:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 312 transitions. [2025-02-08 09:01:00,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2025-02-08 09:01:00,659 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:00,659 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-02-08 09:01:00,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 09:01:00,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 09:01:00,863 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:00,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash -305255442, now seen corresponding path program 10 times [2025-02-08 09:01:00,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:00,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552936534] [2025-02-08 09:01:00,863 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:01:00,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:00,869 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 239 statements into 2 equivalence classes. [2025-02-08 09:01:00,926 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 239 of 239 statements. [2025-02-08 09:01:00,927 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:01:00,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3113 backedges. 1462 proven. 57 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2025-02-08 09:01:01,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:01,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552936534] [2025-02-08 09:01:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552936534] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99581790] [2025-02-08 09:01:01,223 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:01:01,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:01,226 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:01,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 09:01:01,275 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 239 statements into 2 equivalence classes. [2025-02-08 09:01:01,313 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 239 of 239 statements. [2025-02-08 09:01:01,313 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:01:01,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:01,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 09:01:01,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3113 backedges. 1220 proven. 88 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2025-02-08 09:01:01,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3113 backedges. 1220 proven. 88 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2025-02-08 09:01:03,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99581790] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:03,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 23] total 28 [2025-02-08 09:01:03,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608262029] [2025-02-08 09:01:03,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:03,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 09:01:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:03,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 09:01:03,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2025-02-08 09:01:03,353 INFO L87 Difference]: Start difference. First operand 276 states and 312 transitions. Second operand has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 23 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-08 09:01:03,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:03,809 INFO L93 Difference]: Finished difference Result 436 states and 499 transitions. [2025-02-08 09:01:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 09:01:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 23 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 239 [2025-02-08 09:01:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:03,811 INFO L225 Difference]: With dead ends: 436 [2025-02-08 09:01:03,811 INFO L226 Difference]: Without dead ends: 231 [2025-02-08 09:01:03,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 446 SyntacticMatches, 21 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=2057, Unknown=0, NotChecked=0, Total=2352 [2025-02-08 09:01:03,812 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:03,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 348 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:01:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-08 09:01:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2025-02-08 09:01:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 217 states have (on average 1.0829493087557605) internal successors, (235), 217 states have internal predecessors, (235), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-08 09:01:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2025-02-08 09:01:03,835 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 239 [2025-02-08 09:01:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:03,835 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2025-02-08 09:01:03,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 23 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-08 09:01:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2025-02-08 09:01:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2025-02-08 09:01:03,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:03,837 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-02-08 09:01:03,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 09:01:04,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 09:01:04,038 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:04,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1372461406, now seen corresponding path program 11 times [2025-02-08 09:01:04,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:04,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603282777] [2025-02-08 09:01:04,039 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:01:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:04,045 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 12 equivalence classes. [2025-02-08 09:01:04,057 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 150 of 235 statements. [2025-02-08 09:01:04,058 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 09:01:04,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3255 backedges. 1649 proven. 190 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2025-02-08 09:01:04,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:04,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603282777] [2025-02-08 09:01:04,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603282777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:04,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813096718] [2025-02-08 09:01:04,364 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:01:04,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:04,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:04,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:04,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 09:01:04,449 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 12 equivalence classes. [2025-02-08 09:01:04,478 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 150 of 235 statements. [2025-02-08 09:01:04,479 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 09:01:04,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:04,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 09:01:04,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3255 backedges. 1660 proven. 185 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2025-02-08 09:01:04,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3255 backedges. 1673 proven. 172 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2025-02-08 09:01:06,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813096718] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:06,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:06,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 27 [2025-02-08 09:01:06,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501815813] [2025-02-08 09:01:06,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:06,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-08 09:01:06,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:06,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-08 09:01:06,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2025-02-08 09:01:06,561 INFO L87 Difference]: Start difference. First operand 231 states and 249 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 23 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 09:01:06,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:06,998 INFO L93 Difference]: Finished difference Result 376 states and 411 transitions. [2025-02-08 09:01:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-08 09:01:06,999 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 23 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 235 [2025-02-08 09:01:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:07,000 INFO L225 Difference]: With dead ends: 376 [2025-02-08 09:01:07,000 INFO L226 Difference]: Without dead ends: 234 [2025-02-08 09:01:07,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 445 SyntacticMatches, 21 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=443, Invalid=2313, Unknown=0, NotChecked=0, Total=2756 [2025-02-08 09:01:07,002 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:07,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 258 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:01:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-02-08 09:01:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2025-02-08 09:01:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 220 states have (on average 1.0636363636363637) internal successors, (234), 220 states have internal predecessors, (234), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-08 09:01:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 248 transitions. [2025-02-08 09:01:07,018 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 248 transitions. Word has length 235 [2025-02-08 09:01:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:07,019 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 248 transitions. [2025-02-08 09:01:07,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 23 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 09:01:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 248 transitions. [2025-02-08 09:01:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2025-02-08 09:01:07,020 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:07,020 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-02-08 09:01:07,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 09:01:07,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:07,221 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:07,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash 71416366, now seen corresponding path program 12 times [2025-02-08 09:01:07,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:07,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120712138] [2025-02-08 09:01:07,221 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:01:07,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:07,234 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 238 statements into 12 equivalence classes. [2025-02-08 09:01:07,266 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 238 of 238 statements. [2025-02-08 09:01:07,266 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-08 09:01:07,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 319 proven. 2457 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2025-02-08 09:01:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120712138] [2025-02-08 09:01:07,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120712138] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271115026] [2025-02-08 09:01:07,730 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:01:07,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:07,732 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:07,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 09:01:07,823 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 238 statements into 12 equivalence classes. [2025-02-08 09:01:07,865 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 238 of 238 statements. [2025-02-08 09:01:07,865 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-08 09:01:07,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:07,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 09:01:07,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 1521 proven. 860 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2025-02-08 09:01:08,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 1521 proven. 860 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2025-02-08 09:01:09,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271115026] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:09,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:09,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 55 [2025-02-08 09:01:09,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653638413] [2025-02-08 09:01:09,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:09,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-08 09:01:09,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:09,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-08 09:01:09,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=2605, Unknown=0, NotChecked=0, Total=3080 [2025-02-08 09:01:09,326 INFO L87 Difference]: Start difference. First operand 234 states and 248 transitions. Second operand has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 46 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2025-02-08 09:01:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:12,092 INFO L93 Difference]: Finished difference Result 858 states and 950 transitions. [2025-02-08 09:01:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2025-02-08 09:01:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 46 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 238 [2025-02-08 09:01:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:12,095 INFO L225 Difference]: With dead ends: 858 [2025-02-08 09:01:12,095 INFO L226 Difference]: Without dead ends: 598 [2025-02-08 09:01:12,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12929 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7475, Invalid=28435, Unknown=0, NotChecked=0, Total=35910 [2025-02-08 09:01:12,104 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:12,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:01:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-02-08 09:01:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 384. [2025-02-08 09:01:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 366 states have (on average 1.1092896174863387) internal successors, (406), 366 states have internal predecessors, (406), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-08 09:01:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 424 transitions. [2025-02-08 09:01:12,142 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 424 transitions. Word has length 238 [2025-02-08 09:01:12,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:12,143 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 424 transitions. [2025-02-08 09:01:12,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 46 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2025-02-08 09:01:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 424 transitions. [2025-02-08 09:01:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2025-02-08 09:01:12,146 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:12,146 INFO L218 NwaCegarLoop]: trace histogram [83, 83, 83, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1] [2025-02-08 09:01:12,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 09:01:12,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:12,351 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:12,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:12,352 INFO L85 PathProgramCache]: Analyzing trace with hash -538204914, now seen corresponding path program 13 times [2025-02-08 09:01:12,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:12,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583260465] [2025-02-08 09:01:12,352 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:01:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:12,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 408 statements into 1 equivalence classes. [2025-02-08 09:01:12,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 408 of 408 statements. [2025-02-08 09:01:12,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:01:12,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12400 backedges. 7211 proven. 187 refuted. 0 times theorem prover too weak. 5002 trivial. 0 not checked. [2025-02-08 09:01:13,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:13,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583260465] [2025-02-08 09:01:13,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583260465] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:13,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401380341] [2025-02-08 09:01:13,111 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:01:13,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:13,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:13,113 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:13,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 09:01:13,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 408 statements into 1 equivalence classes. [2025-02-08 09:01:13,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 408 of 408 statements. [2025-02-08 09:01:13,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:01:13,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:13,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 09:01:13,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12400 backedges. 6234 proven. 499 refuted. 0 times theorem prover too weak. 5667 trivial. 0 not checked. [2025-02-08 09:01:13,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12400 backedges. 6234 proven. 499 refuted. 0 times theorem prover too weak. 5667 trivial. 0 not checked. [2025-02-08 09:01:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401380341] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:20,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:20,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2025-02-08 09:01:20,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799198038] [2025-02-08 09:01:20,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:20,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-08 09:01:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:20,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-08 09:01:20,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2289, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 09:01:20,360 INFO L87 Difference]: Start difference. First operand 384 states and 424 transitions. Second operand has 51 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 43 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-08 09:01:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:21,622 INFO L93 Difference]: Finished difference Result 712 states and 796 transitions. [2025-02-08 09:01:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2025-02-08 09:01:21,623 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 43 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 408 [2025-02-08 09:01:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:21,625 INFO L225 Difference]: With dead ends: 712 [2025-02-08 09:01:21,625 INFO L226 Difference]: Without dead ends: 420 [2025-02-08 09:01:21,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 758 SyntacticMatches, 36 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5225 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1325, Invalid=10447, Unknown=0, NotChecked=0, Total=11772 [2025-02-08 09:01:21,628 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:21,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 09:01:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2025-02-08 09:01:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 404. [2025-02-08 09:01:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 385 states have (on average 1.0753246753246752) internal successors, (414), 385 states have internal predecessors, (414), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) [2025-02-08 09:01:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 433 transitions. [2025-02-08 09:01:21,657 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 433 transitions. Word has length 408 [2025-02-08 09:01:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:21,657 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 433 transitions. [2025-02-08 09:01:21,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 43 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-08 09:01:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 433 transitions. [2025-02-08 09:01:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2025-02-08 09:01:21,660 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:21,660 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1] [2025-02-08 09:01:21,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 09:01:21,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:21,864 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:21,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash -116562802, now seen corresponding path program 14 times [2025-02-08 09:01:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694953005] [2025-02-08 09:01:21,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:01:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:21,876 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 417 statements into 2 equivalence classes. [2025-02-08 09:01:21,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 417 of 417 statements. [2025-02-08 09:01:21,931 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:01:21,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13198 backedges. 7856 proven. 251 refuted. 0 times theorem prover too weak. 5091 trivial. 0 not checked. [2025-02-08 09:01:22,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694953005] [2025-02-08 09:01:22,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694953005] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461109308] [2025-02-08 09:01:22,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:01:22,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:22,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:22,692 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:22,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 09:01:22,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 417 statements into 2 equivalence classes. [2025-02-08 09:01:22,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 417 of 417 statements. [2025-02-08 09:01:22,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:01:22,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:22,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-08 09:01:22,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13198 backedges. 7619 proven. 750 refuted. 0 times theorem prover too weak. 4829 trivial. 0 not checked. [2025-02-08 09:01:23,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13198 backedges. 7619 proven. 750 refuted. 0 times theorem prover too weak. 4829 trivial. 0 not checked. [2025-02-08 09:01:31,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461109308] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:31,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:31,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 43, 43] total 58 [2025-02-08 09:01:31,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645065667] [2025-02-08 09:01:31,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:31,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-08 09:01:31,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:31,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-08 09:01:31,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2981, Unknown=0, NotChecked=0, Total=3306 [2025-02-08 09:01:31,411 INFO L87 Difference]: Start difference. First operand 404 states and 433 transitions. Second operand has 58 states, 58 states have (on average 2.310344827586207) internal successors, (134), 49 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2025-02-08 09:01:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:33,829 INFO L93 Difference]: Finished difference Result 763 states and 823 transitions. [2025-02-08 09:01:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-02-08 09:01:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.310344827586207) internal successors, (134), 49 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 417 [2025-02-08 09:01:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:33,832 INFO L225 Difference]: With dead ends: 763 [2025-02-08 09:01:33,832 INFO L226 Difference]: Without dead ends: 486 [2025-02-08 09:01:33,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 768 SyntacticMatches, 41 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7670 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1925, Invalid=15631, Unknown=0, NotChecked=0, Total=17556 [2025-02-08 09:01:33,836 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:33,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2574 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 09:01:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2025-02-08 09:01:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 448. [2025-02-08 09:01:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 427 states have (on average 1.063231850117096) internal successors, (454), 427 states have internal predecessors, (454), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 18 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-08 09:01:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 475 transitions. [2025-02-08 09:01:33,871 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 475 transitions. Word has length 417 [2025-02-08 09:01:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:33,871 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 475 transitions. [2025-02-08 09:01:33,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.310344827586207) internal successors, (134), 49 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2025-02-08 09:01:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 475 transitions. [2025-02-08 09:01:33,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-02-08 09:01:33,873 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:33,874 INFO L218 NwaCegarLoop]: trace histogram [88, 88, 88, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1] [2025-02-08 09:01:33,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 09:01:34,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:34,074 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:34,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:34,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1766053218, now seen corresponding path program 15 times [2025-02-08 09:01:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:34,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221320882] [2025-02-08 09:01:34,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:01:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:34,086 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 423 statements into 19 equivalence classes. [2025-02-08 09:01:34,117 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 294 of 423 statements. [2025-02-08 09:01:34,117 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-08 09:01:34,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13745 backedges. 2800 proven. 176 refuted. 0 times theorem prover too weak. 10769 trivial. 0 not checked. [2025-02-08 09:01:34,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221320882] [2025-02-08 09:01:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221320882] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397201819] [2025-02-08 09:01:34,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:01:34,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:34,601 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:34,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 09:01:34,875 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 423 statements into 19 equivalence classes. [2025-02-08 09:01:34,928 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 294 of 423 statements. [2025-02-08 09:01:34,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-08 09:01:34,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:34,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 09:01:34,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13745 backedges. 2800 proven. 176 refuted. 0 times theorem prover too weak. 10769 trivial. 0 not checked. [2025-02-08 09:01:34,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13745 backedges. 2800 proven. 176 refuted. 0 times theorem prover too weak. 10769 trivial. 0 not checked. [2025-02-08 09:01:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397201819] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:35,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:35,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 51 [2025-02-08 09:01:35,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925512887] [2025-02-08 09:01:35,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:35,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-08 09:01:35,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:35,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-08 09:01:35,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 09:01:35,693 INFO L87 Difference]: Start difference. First operand 448 states and 475 transitions. Second operand has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 52 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:01:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:35,855 INFO L93 Difference]: Finished difference Result 941 states and 1107 transitions. [2025-02-08 09:01:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-08 09:01:35,855 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 52 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 423 [2025-02-08 09:01:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:35,860 INFO L225 Difference]: With dead ends: 941 [2025-02-08 09:01:35,860 INFO L226 Difference]: Without dead ends: 936 [2025-02-08 09:01:35,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 09:01:35,861 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:35,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:01:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2025-02-08 09:01:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 520. [2025-02-08 09:01:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 499 states have (on average 1.0781563126252505) internal successors, (538), 499 states have internal predecessors, (538), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 18 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-08 09:01:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 559 transitions. [2025-02-08 09:01:35,906 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 559 transitions. Word has length 423 [2025-02-08 09:01:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:35,906 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 559 transitions. [2025-02-08 09:01:35,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 52 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:01:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 559 transitions. [2025-02-08 09:01:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2025-02-08 09:01:35,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:35,909 INFO L218 NwaCegarLoop]: trace histogram [100, 100, 100, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1] [2025-02-08 09:01:35,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 09:01:36,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:36,110 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:36,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1209228958, now seen corresponding path program 16 times [2025-02-08 09:01:36,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:36,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480116965] [2025-02-08 09:01:36,111 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:01:36,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:36,123 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 459 statements into 2 equivalence classes. [2025-02-08 09:01:36,270 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 459 of 459 statements. [2025-02-08 09:01:36,271 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:01:36,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17279 backedges. 10016 proven. 342 refuted. 0 times theorem prover too weak. 6921 trivial. 0 not checked. [2025-02-08 09:01:37,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480116965] [2025-02-08 09:01:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480116965] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091532674] [2025-02-08 09:01:37,269 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:01:37,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:37,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:37,271 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:37,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 09:01:37,570 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 459 statements into 2 equivalence classes. [2025-02-08 09:01:37,644 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 459 of 459 statements. [2025-02-08 09:01:37,645 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:01:37,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:37,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-08 09:01:37,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17279 backedges. 10547 proven. 1073 refuted. 0 times theorem prover too weak. 5659 trivial. 0 not checked. [2025-02-08 09:01:38,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17279 backedges. 10547 proven. 1073 refuted. 0 times theorem prover too weak. 5659 trivial. 0 not checked. [2025-02-08 09:01:47,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091532674] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:47,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 63 [2025-02-08 09:01:47,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022345776] [2025-02-08 09:01:47,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:47,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-02-08 09:01:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:47,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-02-08 09:01:47,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3557, Unknown=0, NotChecked=0, Total=3906 [2025-02-08 09:01:47,079 INFO L87 Difference]: Start difference. First operand 520 states and 559 transitions. Second operand has 63 states, 63 states have (on average 2.2857142857142856) internal successors, (144), 53 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2025-02-08 09:01:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:49,189 INFO L93 Difference]: Finished difference Result 1018 states and 1097 transitions. [2025-02-08 09:01:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-02-08 09:01:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.2857142857142856) internal successors, (144), 53 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 459 [2025-02-08 09:01:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:49,192 INFO L225 Difference]: With dead ends: 1018 [2025-02-08 09:01:49,192 INFO L226 Difference]: Without dead ends: 660 [2025-02-08 09:01:49,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 846 SyntacticMatches, 46 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10096 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2540, Invalid=22582, Unknown=0, NotChecked=0, Total=25122 [2025-02-08 09:01:49,196 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:49,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3299 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 09:01:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2025-02-08 09:01:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 594. [2025-02-08 09:01:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 570 states have (on average 1.0666666666666667) internal successors, (608), 570 states have internal predecessors, (608), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 09:01:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 632 transitions. [2025-02-08 09:01:49,252 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 632 transitions. Word has length 459 [2025-02-08 09:01:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:49,253 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 632 transitions. [2025-02-08 09:01:49,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.2857142857142856) internal successors, (144), 53 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2025-02-08 09:01:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 632 transitions. [2025-02-08 09:01:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2025-02-08 09:01:49,255 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:49,256 INFO L218 NwaCegarLoop]: trace histogram [101, 101, 101, 17, 16, 16, 16, 16, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1] [2025-02-08 09:01:49,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 09:01:49,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 09:01:49,460 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:49,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash 375147598, now seen corresponding path program 17 times [2025-02-08 09:01:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:49,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153009653] [2025-02-08 09:01:49,460 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:01:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:49,478 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 472 statements into 24 equivalence classes. [2025-02-08 09:01:49,523 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) and asserted 410 of 472 statements. [2025-02-08 09:01:49,523 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2025-02-08 09:01:49,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 17742 backedges. 11224 proven. 1486 refuted. 0 times theorem prover too weak. 5032 trivial. 0 not checked. [2025-02-08 09:01:50,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153009653] [2025-02-08 09:01:50,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153009653] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732491695] [2025-02-08 09:01:50,601 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:01:50,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:50,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:50,604 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:50,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 09:01:50,982 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 472 statements into 24 equivalence classes. [2025-02-08 09:01:51,066 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) and asserted 410 of 472 statements. [2025-02-08 09:01:51,066 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2025-02-08 09:01:51,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:51,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-08 09:01:51,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 17742 backedges. 11224 proven. 1486 refuted. 0 times theorem prover too weak. 5032 trivial. 0 not checked. [2025-02-08 09:01:51,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:01:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17742 backedges. 11224 proven. 1486 refuted. 0 times theorem prover too weak. 5032 trivial. 0 not checked. [2025-02-08 09:01:54,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732491695] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:01:54,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:01:54,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 62 [2025-02-08 09:01:54,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519857087] [2025-02-08 09:01:54,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:01:54,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-02-08 09:01:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:01:54,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-02-08 09:01:54,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=3375, Unknown=0, NotChecked=0, Total=3782 [2025-02-08 09:01:54,333 INFO L87 Difference]: Start difference. First operand 594 states and 632 transitions. Second operand has 62 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 59 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 09:01:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:01:55,328 INFO L93 Difference]: Finished difference Result 1282 states and 1364 transitions. [2025-02-08 09:01:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-02-08 09:01:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 59 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 472 [2025-02-08 09:01:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:01:55,331 INFO L225 Difference]: With dead ends: 1282 [2025-02-08 09:01:55,331 INFO L226 Difference]: Without dead ends: 879 [2025-02-08 09:01:55,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 900 SyntacticMatches, 29 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4542 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1347, Invalid=11309, Unknown=0, NotChecked=0, Total=12656 [2025-02-08 09:01:55,333 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 09:01:55,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 09:01:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2025-02-08 09:01:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 780. [2025-02-08 09:01:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 753 states have (on average 1.050464807436919) internal successors, (791), 753 states have internal predecessors, (791), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2025-02-08 09:01:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 818 transitions. [2025-02-08 09:01:55,415 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 818 transitions. Word has length 472 [2025-02-08 09:01:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:01:55,416 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 818 transitions. [2025-02-08 09:01:55,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 59 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 09:01:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 818 transitions. [2025-02-08 09:01:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2025-02-08 09:01:55,418 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:01:55,418 INFO L218 NwaCegarLoop]: trace histogram [103, 103, 103, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1] [2025-02-08 09:01:55,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 09:01:55,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:55,623 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:01:55,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:01:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash 678202622, now seen corresponding path program 18 times [2025-02-08 09:01:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:01:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90004608] [2025-02-08 09:01:55,624 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:01:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:01:55,640 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 468 statements into 24 equivalence classes. [2025-02-08 09:01:55,680 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 404 of 468 statements. [2025-02-08 09:01:55,680 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-08 09:01:55,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18230 backedges. 693 proven. 15284 refuted. 0 times theorem prover too weak. 2253 trivial. 0 not checked. [2025-02-08 09:01:56,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:01:56,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90004608] [2025-02-08 09:01:56,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90004608] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:01:56,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574539389] [2025-02-08 09:01:56,740 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:01:56,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:01:56,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:01:56,745 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:01:56,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 09:01:57,174 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 468 statements into 24 equivalence classes. [2025-02-08 09:01:57,254 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 404 of 468 statements. [2025-02-08 09:01:57,254 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-08 09:01:57,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:01:57,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-08 09:01:57,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:01:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18230 backedges. 693 proven. 15284 refuted. 0 times theorem prover too weak. 2253 trivial. 0 not checked. [2025-02-08 09:01:57,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:02:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18230 backedges. 693 proven. 15284 refuted. 0 times theorem prover too weak. 2253 trivial. 0 not checked. [2025-02-08 09:02:06,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574539389] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:02:06,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:02:06,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 79 [2025-02-08 09:02:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588534274] [2025-02-08 09:02:06,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:02:06,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2025-02-08 09:02:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:02:06,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2025-02-08 09:02:06,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=981, Invalid=5339, Unknown=0, NotChecked=0, Total=6320 [2025-02-08 09:02:06,925 INFO L87 Difference]: Start difference. First operand 780 states and 818 transitions. Second operand has 80 states, 79 states have (on average 2.670886075949367) internal successors, (211), 58 states have internal predecessors, (211), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2025-02-08 09:02:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:02:11,052 INFO L93 Difference]: Finished difference Result 4326 states and 4706 transitions. [2025-02-08 09:02:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2025-02-08 09:02:11,053 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.670886075949367) internal successors, (211), 58 states have internal predecessors, (211), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) Word has length 468 [2025-02-08 09:02:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:02:11,062 INFO L225 Difference]: With dead ends: 4326 [2025-02-08 09:02:11,062 INFO L226 Difference]: Without dead ends: 3449 [2025-02-08 09:02:11,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20243 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9726, Invalid=44796, Unknown=0, NotChecked=0, Total=54522 [2025-02-08 09:02:11,069 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:02:11,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:02:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2025-02-08 09:02:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 1275. [2025-02-08 09:02:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1233 states have (on average 1.0413625304136254) internal successors, (1284), 1233 states have internal predecessors, (1284), 3 states have call successors, (3), 2 states have call predecessors, (3), 38 states have return successors, (39), 39 states have call predecessors, (39), 2 states have call successors, (39) [2025-02-08 09:02:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1326 transitions. [2025-02-08 09:02:11,214 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1326 transitions. Word has length 468 [2025-02-08 09:02:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:02:11,215 INFO L471 AbstractCegarLoop]: Abstraction has 1275 states and 1326 transitions. [2025-02-08 09:02:11,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.670886075949367) internal successors, (211), 58 states have internal predecessors, (211), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2025-02-08 09:02:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1326 transitions. [2025-02-08 09:02:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2025-02-08 09:02:11,222 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:02:11,222 INFO L218 NwaCegarLoop]: trace histogram [209, 209, 209, 29, 28, 28, 28, 28, 26, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1] [2025-02-08 09:02:11,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 09:02:11,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-08 09:02:11,422 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:02:11,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:02:11,423 INFO L85 PathProgramCache]: Analyzing trace with hash -469332338, now seen corresponding path program 19 times [2025-02-08 09:02:11,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:02:11,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87656963] [2025-02-08 09:02:11,423 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:02:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:02:11,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 928 statements into 1 equivalence classes. [2025-02-08 09:02:11,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 928 of 928 statements. [2025-02-08 09:02:11,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:02:11,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:02:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 74538 backedges. 36249 proven. 420 refuted. 0 times theorem prover too weak. 37869 trivial. 0 not checked. [2025-02-08 09:02:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:02:13,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87656963] [2025-02-08 09:02:13,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87656963] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:02:13,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580876829] [2025-02-08 09:02:13,416 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:02:13,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:02:13,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:02:13,418 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:02:13,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 09:02:13,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 928 statements into 1 equivalence classes. [2025-02-08 09:02:14,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 928 of 928 statements. [2025-02-08 09:02:14,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:02:14,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:02:14,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-08 09:02:14,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:02:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 74538 backedges. 31920 proven. 1477 refuted. 0 times theorem prover too weak. 41141 trivial. 0 not checked. [2025-02-08 09:02:14,860 INFO L312 TraceCheckSpWp]: Computing backward predicates...