./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound10.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd88f875a58f4eeda0acf74fa673f6c9452a00f17e8b4a3e93b35765440e39d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:15:52,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:15:52,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:15:52,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:15:52,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:15:52,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:15:52,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:15:52,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:15:52,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:15:52,321 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:15:52,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:15:52,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:15:52,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:15:52,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:15:52,321 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:15:52,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:15:52,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:15:52,322 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:15:52,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:15:52,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:15:52,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:15:52,323 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd88f875a58f4eeda0acf74fa673f6c9452a00f17e8b4a3e93b35765440e39d [2025-01-09 03:15:52,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:15:52,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:15:52,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:15:52,564 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:15:52,565 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:15:52,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound10.i [2025-01-09 03:15:53,691 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/604e6a4bd/b7c2880a9cd8403a86e5ea7aec462385/FLAGc06dc7045 [2025-01-09 03:15:54,010 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:15:54,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound10.i [2025-01-09 03:15:54,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/604e6a4bd/b7c2880a9cd8403a86e5ea7aec462385/FLAGc06dc7045 [2025-01-09 03:15:54,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/604e6a4bd/b7c2880a9cd8403a86e5ea7aec462385 [2025-01-09 03:15:54,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:15:54,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:15:54,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:15:54,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:15:54,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:15:54,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be1230b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54, skipping insertion in model container [2025-01-09 03:15:54,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:15:54,138 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound10.i[950,963] [2025-01-09 03:15:54,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:15:54,161 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:15:54,168 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound10.i[950,963] [2025-01-09 03:15:54,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:15:54,187 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:15:54,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54 WrapperNode [2025-01-09 03:15:54,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:15:54,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:15:54,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:15:54,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:15:54,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,214 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2025-01-09 03:15:54,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:15:54,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:15:54,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:15:54,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:15:54,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,232 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 03:15:54,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,234 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:15:54,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:15:54,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:15:54,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:15:54,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (1/1) ... [2025-01-09 03:15:54,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:15:54,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:15:54,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 03:15:54,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 03:15:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:15:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 03:15:54,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 03:15:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:15:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:15:54,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:15:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:15:54,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:15:54,320 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:15:54,321 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:15:54,391 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-09 03:15:54,391 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:15:54,397 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:15:54,397 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 03:15:54,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:15:54 BoogieIcfgContainer [2025-01-09 03:15:54,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:15:54,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:15:54,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:15:54,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:15:54,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:15:54" (1/3) ... [2025-01-09 03:15:54,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a3abf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:15:54, skipping insertion in model container [2025-01-09 03:15:54,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:15:54" (2/3) ... [2025-01-09 03:15:54,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a3abf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:15:54, skipping insertion in model container [2025-01-09 03:15:54,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:15:54" (3/3) ... [2025-01-09 03:15:54,403 INFO L128 eAbstractionObserver]: Analyzing ICFG divbin_valuebound10.i [2025-01-09 03:15:54,412 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:15:54,413 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG divbin_valuebound10.i that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 03:15:54,440 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:15:54,447 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;@2099134d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:15:54,447 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:15:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:15:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:15:54,452 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:15:54,453 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:15:54,453 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:15:54,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:15:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash -477191148, now seen corresponding path program 1 times [2025-01-09 03:15:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:15:54,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287165791] [2025-01-09 03:15:54,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:15:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:15:54,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:15:54,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:15:54,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:15:54,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:15:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:15:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:15:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287165791] [2025-01-09 03:15:54,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287165791] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:15:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000279658] [2025-01-09 03:15:54,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:15:54,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:15:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:15:54,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:15:54,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 03:15:54,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:15:54,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:15:54,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:15:54,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:15:54,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 03:15:54,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:15:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:15:54,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:15:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000279658] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:15:54,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:15:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 03:15:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930541261] [2025-01-09 03:15:54,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:15:54,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 03:15:54,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:15:54,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 03:15:54,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:15:54,618 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:15:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:15:54,629 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2025-01-09 03:15:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 03:15:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2025-01-09 03:15:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:15:54,633 INFO L225 Difference]: With dead ends: 51 [2025-01-09 03:15:54,633 INFO L226 Difference]: Without dead ends: 23 [2025-01-09 03:15:54,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:15:54,636 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:15:54,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:15:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-09 03:15:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-09 03:15:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 03:15:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2025-01-09 03:15:54,655 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 29 [2025-01-09 03:15:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:15:54,656 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2025-01-09 03:15:54,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:15:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2025-01-09 03:15:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:15:54,657 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:15:54,657 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:15:54,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 03:15:54,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 03:15:54,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:15:54,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:15:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1934628052, now seen corresponding path program 1 times [2025-01-09 03:15:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:15:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182696201] [2025-01-09 03:15:54,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:15:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:15:54,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:15:54,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:15:54,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:15:54,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:15:54,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176899448] [2025-01-09 03:15:54,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:15:54,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:15:54,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:15:54,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:15:54,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 03:15:54,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:15:54,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:15:54,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:15:54,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:15:54,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:15:54,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:15:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:15:55,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:15:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:15:55,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:15:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182696201] [2025-01-09 03:15:55,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:15:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176899448] [2025-01-09 03:15:55,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176899448] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 03:15:55,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:15:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2025-01-09 03:15:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447115012] [2025-01-09 03:15:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:15:55,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:15:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:15:55,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:15:55,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:15:55,235 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:15:59,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-01-09 03:15:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:15:59,299 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2025-01-09 03:15:59,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:15:59,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2025-01-09 03:15:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:15:59,300 INFO L225 Difference]: With dead ends: 32 [2025-01-09 03:15:59,300 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 03:15:59,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:15:59,301 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:15:59,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2025-01-09 03:15:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 03:15:59,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-09 03:15:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:15:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-01-09 03:15:59,314 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2025-01-09 03:15:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:15:59,315 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-01-09 03:15:59,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:15:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-01-09 03:15:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 03:15:59,317 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:15:59,317 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:15:59,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 03:15:59,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:15:59,522 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:15:59,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:15:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1683012774, now seen corresponding path program 1 times [2025-01-09 03:15:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:15:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16333260] [2025-01-09 03:15:59,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:15:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:15:59,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 03:15:59,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:15:59,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:15:59,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:15:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:15:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:15:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16333260] [2025-01-09 03:15:59,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16333260] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:15:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:15:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:15:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006189862] [2025-01-09 03:15:59,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:15:59,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:15:59,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:15:59,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:15:59,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:15:59,950 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:15:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:15:59,973 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2025-01-09 03:15:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:15:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2025-01-09 03:15:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:15:59,974 INFO L225 Difference]: With dead ends: 42 [2025-01-09 03:15:59,974 INFO L226 Difference]: Without dead ends: 30 [2025-01-09 03:15:59,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:15:59,975 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:15:59,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:15:59,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-01-09 03:15:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-01-09 03:15:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:15:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-01-09 03:15:59,980 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 36 [2025-01-09 03:15:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:15:59,980 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-01-09 03:15:59,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:15:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-01-09 03:15:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:15:59,981 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:15:59,981 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:15:59,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:15:59,981 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:15:59,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:15:59,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1730045252, now seen corresponding path program 1 times [2025-01-09 03:15:59,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:15:59,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859330062] [2025-01-09 03:15:59,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:15:59,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:15:59,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 03:16:00,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:16:00,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:16:00,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:16:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:16:00,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:16:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859330062] [2025-01-09 03:16:00,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859330062] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:16:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727061288] [2025-01-09 03:16:00,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:16:00,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:16:00,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:16:00,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:16:00,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 03:16:00,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 03:16:00,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:16:00,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:16:00,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:16:00,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:16:00,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:16:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:16:00,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:16:00,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727061288] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:16:00,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:16:00,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-01-09 03:16:00,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861211977] [2025-01-09 03:16:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:16:00,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:16:00,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:16:00,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:16:00,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:16:00,738 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:16:02,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:16:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:16:02,377 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2025-01-09 03:16:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:16:02,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2025-01-09 03:16:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:16:02,378 INFO L225 Difference]: With dead ends: 41 [2025-01-09 03:16:02,378 INFO L226 Difference]: Without dead ends: 31 [2025-01-09 03:16:02,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:16:02,378 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-01-09 03:16:02,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-01-09 03:16:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-01-09 03:16:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2025-01-09 03:16:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:16:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-01-09 03:16:02,386 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 37 [2025-01-09 03:16:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:16:02,387 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-01-09 03:16:02,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:16:02,387 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-01-09 03:16:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:16:02,387 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:16:02,388 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:16:02,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 03:16:02,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:16:02,592 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:16:02,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:16:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1728198210, now seen corresponding path program 1 times [2025-01-09 03:16:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:16:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329917842] [2025-01-09 03:16:02,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:16:02,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:16:02,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 03:16:02,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:16:02,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:16:02,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:16:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696480492] [2025-01-09 03:16:02,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:16:02,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:16:02,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:16:02,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:16:02,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 03:16:02,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 03:16:02,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:16:02,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:16:02,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:16:02,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:16:02,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:16:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-09 03:16:02,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:16:06,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:16:06,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329917842] [2025-01-09 03:16:06,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:16:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696480492] [2025-01-09 03:16:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696480492] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:16:06,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:16:06,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2025-01-09 03:16:06,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857069258] [2025-01-09 03:16:06,877 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 03:16:06,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:16:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:16:06,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:16:06,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2025-01-09 03:16:06,878 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:16:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:16:06,923 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2025-01-09 03:16:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:16:06,924 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2025-01-09 03:16:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:16:06,924 INFO L225 Difference]: With dead ends: 40 [2025-01-09 03:16:06,924 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 03:16:06,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2025-01-09 03:16:06,925 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:16:06,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 101 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:16:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 03:16:06,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-01-09 03:16:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 03:16:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2025-01-09 03:16:06,930 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 37 [2025-01-09 03:16:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:16:06,930 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2025-01-09 03:16:06,930 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), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:16:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2025-01-09 03:16:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-09 03:16:06,931 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:16:06,931 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:16:06,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 03:16:07,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:16:07,135 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:16:07,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:16:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash -303512712, now seen corresponding path program 1 times [2025-01-09 03:16:07,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:16:07,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540307064] [2025-01-09 03:16:07,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:16:07,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:16:07,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 03:16:07,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 03:16:07,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:16:07,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:16:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 03:16:07,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:16:07,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540307064] [2025-01-09 03:16:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540307064] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:16:07,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267622709] [2025-01-09 03:16:07,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:16:07,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:16:07,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:16:07,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:16:07,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 03:16:07,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 03:16:07,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 03:16:07,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:16:07,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:16:07,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:16:07,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:16:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:16:07,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:16:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 03:16:08,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267622709] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:16:08,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:16:08,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 23 [2025-01-09 03:16:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998053927] [2025-01-09 03:16:08,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:16:08,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:16:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:16:08,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:16:08,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:16:08,552 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2025-01-09 03:16:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:16:09,121 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2025-01-09 03:16:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 03:16:09,122 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) Word has length 44 [2025-01-09 03:16:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:16:09,123 INFO L225 Difference]: With dead ends: 57 [2025-01-09 03:16:09,123 INFO L226 Difference]: Without dead ends: 42 [2025-01-09 03:16:09,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2025-01-09 03:16:09,124 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:16:09,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 190 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 03:16:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-01-09 03:16:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2025-01-09 03:16:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 03:16:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2025-01-09 03:16:09,131 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 44 [2025-01-09 03:16:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:16:09,131 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2025-01-09 03:16:09,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2025-01-09 03:16:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2025-01-09 03:16:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-09 03:16:09,133 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:16:09,133 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:16:09,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 03:16:09,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:16:09,337 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:16:09,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:16:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1053486614, now seen corresponding path program 2 times [2025-01-09 03:16:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:16:09,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910010251] [2025-01-09 03:16:09,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:16:09,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:16:09,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-01-09 03:16:09,379 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 03:16:09,379 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:16:09,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:16:09,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111286006] [2025-01-09 03:16:09,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:16:09,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:16:09,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:16:09,382 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:16:09,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 03:16:09,410 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-01-09 03:16:09,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 03:16:09,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:16:09,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:16:09,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 03:16:09,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:16:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:16:10,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:16:33,439 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 03:16:41,469 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824)) (.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (or (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (* 2 .cse0)) (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse0 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~b~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1)))) is different from true [2025-01-09 03:16:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 2 not checked. [2025-01-09 03:16:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:16:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910010251] [2025-01-09 03:16:41,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:16:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111286006] [2025-01-09 03:16:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111286006] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:16:41,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:16:41,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2025-01-09 03:16:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717166252] [2025-01-09 03:16:41,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:16:41,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:16:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:16:41,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:16:41,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=384, Unknown=1, NotChecked=40, Total=506 [2025-01-09 03:16:41,517 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 21 states have internal predecessors, (37), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2025-01-09 03:16:51,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-01-09 03:17:05,864 WARN L286 SmtUtils]: Spent 12.88s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-09 03:17:16,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-01-09 03:17:21,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []