./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/array-programs/partial_mod_count_limited_4.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 17:02:09,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 17:02:09,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 17:02:09,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 17:02:09,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 17:02:09,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 17:02:09,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 17:02:09,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 17:02:09,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 17:02:09,180 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 17:02:09,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 17:02:09,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 17:02:09,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 17:02:09,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 17:02:09,181 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 17:02:09,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 17:02:09,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 17:02:09,181 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 17:02:09,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 17:02:09,182 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 17:02:09,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:02:09,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 17:02:09,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 17:02:09,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 17:02:09,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 17:02:09,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 17:02:09,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 17:02:09,184 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 -> 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b [2025-02-07 17:02:09,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 17:02:09,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 17:02:09,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 17:02:09,413 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 17:02:09,414 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 17:02:09,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2025-02-07 17:02:10,559 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7cffc1112/cfd015cca06f48d89e66f2e7372ff14b/FLAG0874c90db [2025-02-07 17:02:10,774 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 17:02:10,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2025-02-07 17:02:10,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7cffc1112/cfd015cca06f48d89e66f2e7372ff14b/FLAG0874c90db [2025-02-07 17:02:11,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7cffc1112/cfd015cca06f48d89e66f2e7372ff14b [2025-02-07 17:02:11,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 17:02:11,141 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 17:02:11,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 17:02:11,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 17:02:11,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 17:02:11,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f53cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11, skipping insertion in model container [2025-02-07 17:02:11,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,155 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 17:02:11,254 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/array-programs/partial_mod_count_limited_4.c[331,344] [2025-02-07 17:02:11,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:02:11,274 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 17:02:11,282 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/array-programs/partial_mod_count_limited_4.c[331,344] [2025-02-07 17:02:11,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:02:11,298 INFO L204 MainTranslator]: Completed translation [2025-02-07 17:02:11,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11 WrapperNode [2025-02-07 17:02:11,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 17:02:11,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 17:02:11,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 17:02:11,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 17:02:11,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,320 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2025-02-07 17:02:11,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 17:02:11,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 17:02:11,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 17:02:11,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 17:02:11,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,337 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-07 17:02:11,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,344 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 17:02:11,350 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 17:02:11,350 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 17:02:11,350 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 17:02:11,350 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (1/1) ... [2025-02-07 17:02:11,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:02:11,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:02:11,373 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) [2025-02-07 17:02:11,382 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 [2025-02-07 17:02:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 17:02:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 17:02:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 17:02:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 17:02:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 17:02:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 17:02:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 17:02:11,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 17:02:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 17:02:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 17:02:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 17:02:11,459 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 17:02:11,464 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 17:02:11,616 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L12: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-02-07 17:02:11,621 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-07 17:02:11,622 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 17:02:11,626 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 17:02:11,627 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 17:02:11,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:02:11 BoogieIcfgContainer [2025-02-07 17:02:11,627 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 17:02:11,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 17:02:11,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 17:02:11,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 17:02:11,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 05:02:11" (1/3) ... [2025-02-07 17:02:11,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c4742f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:02:11, skipping insertion in model container [2025-02-07 17:02:11,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:02:11" (2/3) ... [2025-02-07 17:02:11,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c4742f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:02:11, skipping insertion in model container [2025-02-07 17:02:11,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:02:11" (3/3) ... [2025-02-07 17:02:11,633 INFO L128 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_4.c [2025-02-07 17:02:11,641 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 17:02:11,642 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_4.c that has 1 procedures, 18 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-07 17:02:11,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 17:02:11,689 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;@2890021, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 17:02:11,689 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 17:02:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:11,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 17:02:11,696 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:11,697 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:11,698 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:11,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash 902650163, now seen corresponding path program 1 times [2025-02-07 17:02:11,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704299660] [2025-02-07 17:02:11,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:11,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:11,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 17:02:11,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 17:02:11,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:11,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:11,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704299660] [2025-02-07 17:02:11,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704299660] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:02:11,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:02:11,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 17:02:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536409054] [2025-02-07 17:02:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:02:11,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 17:02:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:11,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 17:02:11,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:02:11,872 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:02:11,880 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2025-02-07 17:02:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 17:02:11,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-07 17:02:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:02:11,885 INFO L225 Difference]: With dead ends: 34 [2025-02-07 17:02:11,886 INFO L226 Difference]: Without dead ends: 15 [2025-02-07 17:02:11,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:02:11,889 INFO L435 NwaCegarLoop]: 22 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, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:02:11,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:02:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-07 17:02:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-02-07 17:02:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-02-07 17:02:11,911 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2025-02-07 17:02:11,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:02:11,911 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-02-07 17:02:11,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:11,912 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-02-07 17:02:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 17:02:11,912 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:11,912 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:11,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 17:02:11,912 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:11,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:11,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1649506798, now seen corresponding path program 1 times [2025-02-07 17:02:11,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:11,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582073473] [2025-02-07 17:02:11,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:11,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:11,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 17:02:11,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 17:02:11,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:11,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582073473] [2025-02-07 17:02:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582073473] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:02:12,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:02:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 17:02:12,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091931900] [2025-02-07 17:02:12,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:02:12,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:02:12,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:12,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:02:12,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:02:12,018 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:12,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:02:12,050 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2025-02-07 17:02:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:02:12,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-07 17:02:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:02:12,051 INFO L225 Difference]: With dead ends: 39 [2025-02-07 17:02:12,051 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 17:02:12,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:02:12,052 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:02:12,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:02:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 17:02:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2025-02-07 17:02:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2025-02-07 17:02:12,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2025-02-07 17:02:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:02:12,055 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2025-02-07 17:02:12,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2025-02-07 17:02:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-07 17:02:12,056 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:12,056 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:12,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 17:02:12,056 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:12,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1419639048, now seen corresponding path program 1 times [2025-02-07 17:02:12,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804909941] [2025-02-07 17:02:12,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:12,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:12,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-07 17:02:12,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 17:02:12,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:12,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:12,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:12,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804909941] [2025-02-07 17:02:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804909941] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:02:12,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113860888] [2025-02-07 17:02:12,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:12,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:12,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:02:12,162 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) [2025-02-07 17:02:12,181 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 [2025-02-07 17:02:12,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-07 17:02:12,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 17:02:12,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:12,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:12,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 17:02:12,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:02:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:12,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:02:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113860888] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:02:12,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:02:12,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-07 17:02:12,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438892712] [2025-02-07 17:02:12,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:02:12,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-07 17:02:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:12,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-07 17:02:12,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:02:12,329 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:02:12,424 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2025-02-07 17:02:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 17:02:12,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-07 17:02:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:02:12,425 INFO L225 Difference]: With dead ends: 65 [2025-02-07 17:02:12,425 INFO L226 Difference]: Without dead ends: 53 [2025-02-07 17:02:12,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:02:12,429 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 127 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:02:12,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 47 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:02:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-07 17:02:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 31. [2025-02-07 17:02:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2025-02-07 17:02:12,437 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 14 [2025-02-07 17:02:12,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:02:12,437 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2025-02-07 17:02:12,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2025-02-07 17:02:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-07 17:02:12,439 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:12,440 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:12,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 17:02:12,640 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 [2025-02-07 17:02:12,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:12,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash -756401614, now seen corresponding path program 1 times [2025-02-07 17:02:12,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:12,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119378554] [2025-02-07 17:02:12,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:12,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:12,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-07 17:02:12,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-07 17:02:12,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:12,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119378554] [2025-02-07 17:02:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119378554] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:02:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744069208] [2025-02-07 17:02:12,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:12,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:02:12,995 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) [2025-02-07 17:02:13,000 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 [2025-02-07 17:02:13,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-07 17:02:13,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-07 17:02:13,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:13,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:13,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 17:02:13,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:02:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:13,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:02:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:02:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744069208] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:02:13,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:02:13,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2025-02-07 17:02:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908870496] [2025-02-07 17:02:13,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:02:13,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 17:02:13,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:13,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 17:02:13,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=190, Unknown=0, NotChecked=0, Total=306 [2025-02-07 17:02:13,239 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:02:13,410 INFO L93 Difference]: Finished difference Result 141 states and 181 transitions. [2025-02-07 17:02:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-07 17:02:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-02-07 17:02:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:02:13,412 INFO L225 Difference]: With dead ends: 141 [2025-02-07 17:02:13,412 INFO L226 Difference]: Without dead ends: 125 [2025-02-07 17:02:13,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=315, Unknown=0, NotChecked=0, Total=506 [2025-02-07 17:02:13,413 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 393 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:02:13,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 83 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:02:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-02-07 17:02:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 61. [2025-02-07 17:02:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2025-02-07 17:02:13,418 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 29 [2025-02-07 17:02:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:02:13,418 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2025-02-07 17:02:13,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2025-02-07 17:02:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-07 17:02:13,420 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:13,420 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:13,429 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 [2025-02-07 17:02:13,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:13,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:13,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1156127347, now seen corresponding path program 2 times [2025-02-07 17:02:13,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:13,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151364937] [2025-02-07 17:02:13,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:02:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:13,638 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-07 17:02:13,690 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-02-07 17:02:13,690 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:02:13,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 129 proven. 60 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-07 17:02:14,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151364937] [2025-02-07 17:02:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151364937] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:02:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789816398] [2025-02-07 17:02:14,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:02:14,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:14,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:02:14,178 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) [2025-02-07 17:02:14,179 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 [2025-02-07 17:02:14,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-07 17:02:14,253 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 59 statements. [2025-02-07 17:02:14,253 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-07 17:02:14,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:14,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-07 17:02:14,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:02:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-02-07 17:02:14,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:02:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789816398] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:02:14,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:02:14,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2025-02-07 17:02:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341800767] [2025-02-07 17:02:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:02:14,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 17:02:14,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:14,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 17:02:14,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:02:14,522 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:02:14,592 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2025-02-07 17:02:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 17:02:14,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-07 17:02:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:02:14,593 INFO L225 Difference]: With dead ends: 73 [2025-02-07 17:02:14,593 INFO L226 Difference]: Without dead ends: 71 [2025-02-07 17:02:14,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-02-07 17:02:14,594 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:02:14,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 37 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:02:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-07 17:02:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-02-07 17:02:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2025-02-07 17:02:14,601 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 59 [2025-02-07 17:02:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:02:14,601 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2025-02-07 17:02:14,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2025-02-07 17:02:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-07 17:02:14,602 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:14,603 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:14,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 17:02:14,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:14,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:14,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1189165094, now seen corresponding path program 1 times [2025-02-07 17:02:14,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:14,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961399041] [2025-02-07 17:02:14,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:14,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-07 17:02:14,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 17:02:14,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:14,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 121 proven. 87 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 17:02:15,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961399041] [2025-02-07 17:02:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961399041] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:02:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670701395] [2025-02-07 17:02:15,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:02:15,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:15,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:02:15,262 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) [2025-02-07 17:02:15,271 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 [2025-02-07 17:02:15,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-07 17:02:15,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 17:02:15,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:02:15,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:15,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-07 17:02:15,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:02:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:02:15,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:02:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:02:15,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670701395] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:02:15,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:02:15,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2025-02-07 17:02:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957468919] [2025-02-07 17:02:15,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:02:15,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-07 17:02:15,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:15,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-07 17:02:15,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=667, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 17:02:15,791 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:02:16,253 INFO L93 Difference]: Finished difference Result 521 states and 649 transitions. [2025-02-07 17:02:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-07 17:02:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-02-07 17:02:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:02:16,255 INFO L225 Difference]: With dead ends: 521 [2025-02-07 17:02:16,255 INFO L226 Difference]: Without dead ends: 480 [2025-02-07 17:02:16,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=686, Invalid=1206, Unknown=0, NotChecked=0, Total=1892 [2025-02-07 17:02:16,257 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 775 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:02:16,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 184 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:02:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2025-02-07 17:02:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 131. [2025-02-07 17:02:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 130 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 168 transitions. [2025-02-07 17:02:16,269 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 168 transitions. Word has length 64 [2025-02-07 17:02:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:02:16,269 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 168 transitions. [2025-02-07 17:02:16,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 168 transitions. [2025-02-07 17:02:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-07 17:02:16,271 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:16,271 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:16,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 17:02:16,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-07 17:02:16,472 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:16,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -345303238, now seen corresponding path program 2 times [2025-02-07 17:02:16,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:16,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-02-07 17:02:16,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:02:16,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:16,501 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-02-07 17:02:16,537 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-02-07 17:02:16,537 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:02:16,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:02:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-02-07 17:02:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262356097] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:02:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216678842] [2025-02-07 17:02:17,668 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:02:17,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:02:17,673 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) [2025-02-07 17:02:17,676 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 [2025-02-07 17:02:17,738 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-02-07 17:02:17,823 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-02-07 17:02:17,823 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:02:17,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:17,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-07 17:02:17,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:02:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:02:18,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:02:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:02:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216678842] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:02:19,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:02:19,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2025-02-07 17:02:19,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986563957] [2025-02-07 17:02:19,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:02:19,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-02-07 17:02:19,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:19,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-02-07 17:02:19,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2025-02-07 17:02:19,195 INFO L87 Difference]: Start difference. First operand 131 states and 168 transitions. Second operand has 73 states, 73 states have (on average 4.7534246575342465) internal successors, (347), 72 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:02:20,767 INFO L93 Difference]: Finished difference Result 1079 states and 1345 transitions. [2025-02-07 17:02:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-07 17:02:20,768 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.7534246575342465) internal successors, (347), 72 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2025-02-07 17:02:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:02:20,771 INFO L225 Difference]: With dead ends: 1079 [2025-02-07 17:02:20,771 INFO L226 Difference]: Without dead ends: 1008 [2025-02-07 17:02:20,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 17:02:20,776 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 2006 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 17:02:20,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 422 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 17:02:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2025-02-07 17:02:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 251. [2025-02-07 17:02:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.296) internal successors, (324), 250 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2025-02-07 17:02:20,808 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 124 [2025-02-07 17:02:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:02:20,809 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2025-02-07 17:02:20,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.7534246575342465) internal successors, (347), 72 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:02:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2025-02-07 17:02:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2025-02-07 17:02:20,812 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:02:20,812 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:02:20,819 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 [2025-02-07 17:02:21,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:21,013 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:02:21,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:02:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1442619910, now seen corresponding path program 3 times [2025-02-07 17:02:21,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:02:21,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940536261] [2025-02-07 17:02:21,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:02:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:02:21,063 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 244 statements into 47 equivalence classes. [2025-02-07 17:02:21,948 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) and asserted 164 of 244 statements. [2025-02-07 17:02:21,948 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2025-02-07 17:02:21,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 4022 refuted. 0 times theorem prover too weak. 1203 trivial. 0 not checked. [2025-02-07 17:02:23,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:02:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940536261] [2025-02-07 17:02:23,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940536261] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:02:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050576505] [2025-02-07 17:02:23,632 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:02:23,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:02:23,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:02:23,634 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) [2025-02-07 17:02:23,639 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 [2025-02-07 17:02:23,708 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 244 statements into 47 equivalence classes. [2025-02-07 17:02:23,788 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 244 statements. [2025-02-07 17:02:23,788 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 17:02:23,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:02:23,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-07 17:02:23,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:02:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 5040 trivial. 0 not checked. [2025-02-07 17:02:25,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:02:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 181 proven. 4 refuted. 0 times theorem prover too weak. 5040 trivial. 0 not checked. [2025-02-07 17:02:28,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050576505] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:02:28,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:02:28,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 8, 9] total 44 [2025-02-07 17:02:28,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691038950] [2025-02-07 17:02:28,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:02:28,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-07 17:02:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:02:28,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-07 17:02:28,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1514, Unknown=0, NotChecked=0, Total=1980 [2025-02-07 17:02:28,823 INFO L87 Difference]: Start difference. First operand 251 states and 324 transitions. Second operand has 45 states, 45 states have (on average 4.022222222222222) internal successors, (181), 44 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:03:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:03:02,414 INFO L93 Difference]: Finished difference Result 7543 states and 10105 transitions. [2025-02-07 17:03:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 628 states. [2025-02-07 17:03:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.022222222222222) internal successors, (181), 44 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2025-02-07 17:03:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:03:02,440 INFO L225 Difference]: With dead ends: 7543 [2025-02-07 17:03:02,441 INFO L226 Difference]: Without dead ends: 7526 [2025-02-07 17:03:02,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 643 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215820 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=68033, Invalid=347347, Unknown=0, NotChecked=0, Total=415380 [2025-02-07 17:03:02,469 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 1897 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:03:02,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 672 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-02-07 17:03:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2025-02-07 17:03:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 506. [2025-02-07 17:03:02,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.297029702970297) internal successors, (655), 505 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:03:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 655 transitions. [2025-02-07 17:03:02,582 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 655 transitions. Word has length 244 [2025-02-07 17:03:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:03:02,582 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 655 transitions. [2025-02-07 17:03:02,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.022222222222222) internal successors, (181), 44 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:03:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 655 transitions. [2025-02-07 17:03:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2025-02-07 17:03:02,585 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:03:02,585 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 23, 23, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:03:02,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-07 17:03:02,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-07 17:03:02,789 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:03:02,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:03:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1772466233, now seen corresponding path program 1 times [2025-02-07 17:03:02,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:03:02,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027651477] [2025-02-07 17:03:02,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:03:02,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:03:02,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 264 statements into 1 equivalence classes. [2025-02-07 17:03:02,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 264 of 264 statements. [2025-02-07 17:03:02,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:03:02,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:03:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5291 backedges. 2688 proven. 240 refuted. 0 times theorem prover too weak. 2363 trivial. 0 not checked. [2025-02-07 17:03:03,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:03:03,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027651477] [2025-02-07 17:03:03,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027651477] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:03:03,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150761529] [2025-02-07 17:03:03,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:03:03,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:03:03,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:03:03,508 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) [2025-02-07 17:03:03,510 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 [2025-02-07 17:03:03,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 264 statements into 1 equivalence classes. [2025-02-07 17:03:03,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 264 of 264 statements. [2025-02-07 17:03:03,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:03:03,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:03:03,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-07 17:03:03,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:03:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5291 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-07 17:03:05,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:03:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5291 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-07 17:03:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150761529] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:03:07,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:03:07,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 49, 49] total 103 [2025-02-07 17:03:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241874689] [2025-02-07 17:03:07,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:03:07,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2025-02-07 17:03:07,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:03:07,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2025-02-07 17:03:07,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4826, Invalid=5886, Unknown=0, NotChecked=0, Total=10712 [2025-02-07 17:03:07,046 INFO L87 Difference]: Start difference. First operand 506 states and 655 transitions. Second operand has 104 states, 104 states have (on average 4.8076923076923075) internal successors, (500), 103 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:03:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:03:25,363 INFO L93 Difference]: Finished difference Result 20356 states and 27346 transitions. [2025-02-07 17:03:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2025-02-07 17:03:25,364 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 4.8076923076923075) internal successors, (500), 103 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2025-02-07 17:03:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:03:25,409 INFO L225 Difference]: With dead ends: 20356 [2025-02-07 17:03:25,409 INFO L226 Difference]: Without dead ends: 20073 [2025-02-07 17:03:25,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44849 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=39753, Invalid=74829, Unknown=0, NotChecked=0, Total=114582 [2025-02-07 17:03:25,419 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 4234 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4234 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:03:25,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4234 Valid, 589 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-07 17:03:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20073 states. [2025-02-07 17:03:25,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20073 to 1123. [2025-02-07 17:03:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.322638146167558) internal successors, (1484), 1122 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:03:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1484 transitions. [2025-02-07 17:03:25,848 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1484 transitions. Word has length 264 [2025-02-07 17:03:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:03:25,848 INFO L471 AbstractCegarLoop]: Abstraction has 1123 states and 1484 transitions. [2025-02-07 17:03:25,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 4.8076923076923075) internal successors, (500), 103 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:03:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1484 transitions. [2025-02-07 17:03:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2025-02-07 17:03:25,854 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:03:25,854 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 47, 47, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2025-02-07 17:03:25,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 17:03:26,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:03:26,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:03:26,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:03:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash -295806278, now seen corresponding path program 4 times [2025-02-07 17:03:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:03:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110293548] [2025-02-07 17:03:26,057 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:03:26,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:03:26,137 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 504 statements into 2 equivalence classes. [2025-02-07 17:03:26,246 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 504 of 504 statements. [2025-02-07 17:03:26,247 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:03:26,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:03:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 22019 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-07 17:03:36,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:03:36,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110293548] [2025-02-07 17:03:36,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110293548] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:03:36,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932679040] [2025-02-07 17:03:36,964 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:03:36,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:03:36,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:03:36,966 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) [2025-02-07 17:03:36,967 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 [2025-02-07 17:03:37,092 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 504 statements into 2 equivalence classes.