./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 793b26553c71344b324b46475842c7a1bd19a5c1a9ea8ef11886f9d003d8d082 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 11:20:25,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 11:20:25,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 11:20:25,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 11:20:25,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 11:20:25,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 11:20:25,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 11:20:25,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 11:20:25,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 11:20:25,571 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 11:20:25,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 11:20:25,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 11:20:25,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 11:20:25,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 11:20:25,572 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 11:20:25,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 11:20:25,573 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 11:20:25,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:20:25,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:20:25,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 11:20:25,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 11:20:25,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 11:20:25,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 11:20:25,575 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 -> 793b26553c71344b324b46475842c7a1bd19a5c1a9ea8ef11886f9d003d8d082 [2025-01-09 11:20:25,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 11:20:25,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 11:20:25,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 11:20:25,791 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 11:20:25,791 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 11:20:25,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i [2025-01-09 11:20:26,897 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dae9f4b7b/fe6ee34d98494409bc4059f74471de2b/FLAGbe1d0ccb9 [2025-01-09 11:20:27,148 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 11:20:27,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i [2025-01-09 11:20:27,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dae9f4b7b/fe6ee34d98494409bc4059f74471de2b/FLAGbe1d0ccb9 [2025-01-09 11:20:27,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dae9f4b7b/fe6ee34d98494409bc4059f74471de2b [2025-01-09 11:20:27,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 11:20:27,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 11:20:27,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 11:20:27,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 11:20:27,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 11:20:27,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59dd3d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27, skipping insertion in model container [2025-01-09 11:20:27,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 11:20:27,305 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i[919,932] [2025-01-09 11:20:27,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:20:27,384 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 11:20:27,393 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i[919,932] [2025-01-09 11:20:27,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:20:27,442 INFO L204 MainTranslator]: Completed translation [2025-01-09 11:20:27,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27 WrapperNode [2025-01-09 11:20:27,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 11:20:27,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 11:20:27,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 11:20:27,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 11:20:27,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,495 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 255 [2025-01-09 11:20:27,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 11:20:27,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 11:20:27,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 11:20:27,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 11:20:27,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,506 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,516 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 11:20:27,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,523 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 11:20:27,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 11:20:27,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 11:20:27,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 11:20:27,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (1/1) ... [2025-01-09 11:20:27,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:20:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:20:27,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 11:20:27,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 11:20:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 11:20:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 11:20:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 11:20:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 11:20:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 11:20:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 11:20:27,654 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 11:20:27,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 11:20:27,948 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-09 11:20:27,949 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 11:20:27,959 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 11:20:27,960 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 11:20:27,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:20:27 BoogieIcfgContainer [2025-01-09 11:20:27,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 11:20:27,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 11:20:27,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 11:20:27,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 11:20:27,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:20:27" (1/3) ... [2025-01-09 11:20:27,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aab0e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:20:27, skipping insertion in model container [2025-01-09 11:20:27,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:20:27" (2/3) ... [2025-01-09 11:20:27,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aab0e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:20:27, skipping insertion in model container [2025-01-09 11:20:27,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:20:27" (3/3) ... [2025-01-09 11:20:27,970 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i [2025-01-09 11:20:27,979 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 11:20:27,981 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-70.i that has 2 procedures, 111 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 11:20:28,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 11:20:28,032 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;@2ef7041b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 11:20:28,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 11:20:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 68 states have internal predecessors, (93), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2025-01-09 11:20:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-01-09 11:20:28,047 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:20:28,048 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:20:28,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:20:28,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:20:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash -830515863, now seen corresponding path program 1 times [2025-01-09 11:20:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:20:28,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79968420] [2025-01-09 11:20:28,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:20:28,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:28,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:28,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:28,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:20:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2025-01-09 11:20:28,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:20:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79968420] [2025-01-09 11:20:28,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79968420] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:20:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611321275] [2025-01-09 11:20:28,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:28,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:20:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:20:28,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 11:20:28,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 11:20:28,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:28,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:28,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:28,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:20:28,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 11:20:28,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:20:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2025-01-09 11:20:28,668 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 11:20:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611321275] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:20:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:20:28,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 11:20:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115697380] [2025-01-09 11:20:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:20:28,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 11:20:28,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:20:28,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 11:20:28,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:20:28,689 INFO L87 Difference]: Start difference. First operand has 111 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 68 states have internal predecessors, (93), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2025-01-09 11:20:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:20:28,720 INFO L93 Difference]: Finished difference Result 216 states and 386 transitions. [2025-01-09 11:20:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 11:20:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 254 [2025-01-09 11:20:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:20:28,727 INFO L225 Difference]: With dead ends: 216 [2025-01-09 11:20:28,728 INFO L226 Difference]: Without dead ends: 108 [2025-01-09 11:20:28,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:20:28,735 INFO L435 NwaCegarLoop]: 169 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, 169 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 11:20:28,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 11:20:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-01-09 11:20:28,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-01-09 11:20:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2025-01-09 11:20:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 169 transitions. [2025-01-09 11:20:28,782 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 169 transitions. Word has length 254 [2025-01-09 11:20:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:20:28,784 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 169 transitions. [2025-01-09 11:20:28,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2025-01-09 11:20:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 169 transitions. [2025-01-09 11:20:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-01-09 11:20:28,788 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:20:28,788 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:20:28,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 11:20:28,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 11:20:28,992 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:20:28,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:20:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash 690206519, now seen corresponding path program 1 times [2025-01-09 11:20:28,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:20:28,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84160975] [2025-01-09 11:20:28,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:20:29,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:29,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:29,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:29,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:20:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2025-01-09 11:20:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:20:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84160975] [2025-01-09 11:20:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84160975] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:20:29,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:20:29,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 11:20:29,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513388716] [2025-01-09 11:20:29,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:20:29,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 11:20:29,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:20:29,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 11:20:29,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 11:20:29,620 INFO L87 Difference]: Start difference. First operand 108 states and 169 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2025-01-09 11:20:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:20:29,719 INFO L93 Difference]: Finished difference Result 408 states and 635 transitions. [2025-01-09 11:20:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 11:20:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 254 [2025-01-09 11:20:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:20:29,723 INFO L225 Difference]: With dead ends: 408 [2025-01-09 11:20:29,723 INFO L226 Difference]: Without dead ends: 303 [2025-01-09 11:20:29,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 11:20:29,727 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 327 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 11:20:29,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 569 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 11:20:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2025-01-09 11:20:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2025-01-09 11:20:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 202 states have (on average 1.4158415841584158) internal successors, (286), 204 states have internal predecessors, (286), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 11:20:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 462 transitions. [2025-01-09 11:20:29,790 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 462 transitions. Word has length 254 [2025-01-09 11:20:29,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:20:29,791 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 462 transitions. [2025-01-09 11:20:29,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2025-01-09 11:20:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 462 transitions. [2025-01-09 11:20:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-01-09 11:20:29,793 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:20:29,794 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:20:29,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 11:20:29,794 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:20:29,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:20:29,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1391271097, now seen corresponding path program 1 times [2025-01-09 11:20:29,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:20:29,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673101587] [2025-01-09 11:20:29,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:29,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:20:29,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:29,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:29,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:29,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:20:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 9 proven. 111 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2025-01-09 11:20:30,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:20:30,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673101587] [2025-01-09 11:20:30,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673101587] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:20:30,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985005962] [2025-01-09 11:20:30,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:20:30,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:20:30,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 11:20:30,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 11:20:30,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:30,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:30,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:30,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:20:30,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 11:20:30,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:20:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 490 proven. 111 refuted. 0 times theorem prover too weak. 2679 trivial. 0 not checked. [2025-01-09 11:20:30,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:20:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 9 proven. 111 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2025-01-09 11:20:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985005962] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 11:20:31,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 11:20:31,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-01-09 11:20:31,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807468436] [2025-01-09 11:20:31,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 11:20:31,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 11:20:31,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:20:31,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 11:20:31,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 11:20:31,089 INFO L87 Difference]: Start difference. First operand 295 states and 462 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2025-01-09 11:20:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:20:31,326 INFO L93 Difference]: Finished difference Result 515 states and 802 transitions. [2025-01-09 11:20:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 11:20:31,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 254 [2025-01-09 11:20:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:20:31,329 INFO L225 Difference]: With dead ends: 515 [2025-01-09 11:20:31,329 INFO L226 Difference]: Without dead ends: 223 [2025-01-09 11:20:31,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2025-01-09 11:20:31,330 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 64 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 11:20:31,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 281 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 11:20:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-01-09 11:20:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2025-01-09 11:20:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 132 states have (on average 1.3106060606060606) internal successors, (173), 132 states have internal predecessors, (173), 82 states have call successors, (82), 4 states have call predecessors, (82), 4 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2025-01-09 11:20:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 337 transitions. [2025-01-09 11:20:31,363 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 337 transitions. Word has length 254 [2025-01-09 11:20:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:20:31,363 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 337 transitions. [2025-01-09 11:20:31,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2025-01-09 11:20:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 337 transitions. [2025-01-09 11:20:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-01-09 11:20:31,366 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:20:31,366 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:20:31,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 11:20:31,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:20:31,570 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:20:31,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:20:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1507854969, now seen corresponding path program 1 times [2025-01-09 11:20:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:20:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319754862] [2025-01-09 11:20:31,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:31,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:20:31,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:31,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:31,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:31,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:20:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 33 proven. 87 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2025-01-09 11:20:32,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:20:32,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319754862] [2025-01-09 11:20:32,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319754862] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:20:32,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635591201] [2025-01-09 11:20:32,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:32,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:20:32,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:20:32,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 11:20:32,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 11:20:32,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:32,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:32,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:32,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:20:32,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 11:20:32,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:20:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1369 proven. 168 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2025-01-09 11:20:34,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:20:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 66 proven. 171 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2025-01-09 11:20:35,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635591201] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 11:20:35,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 11:20:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 28 [2025-01-09 11:20:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898803014] [2025-01-09 11:20:35,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 11:20:35,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 11:20:35,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:20:35,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 11:20:35,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2025-01-09 11:20:35,710 INFO L87 Difference]: Start difference. First operand 219 states and 337 transitions. Second operand has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (123), 4 states have call predecessors, (123), 8 states have return successors, (123), 8 states have call predecessors, (123), 8 states have call successors, (123) [2025-01-09 11:20:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:20:40,859 INFO L93 Difference]: Finished difference Result 1113 states and 1659 transitions. [2025-01-09 11:20:40,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-01-09 11:20:40,860 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (123), 4 states have call predecessors, (123), 8 states have return successors, (123), 8 states have call predecessors, (123), 8 states have call successors, (123) Word has length 254 [2025-01-09 11:20:40,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:20:40,867 INFO L225 Difference]: With dead ends: 1113 [2025-01-09 11:20:40,867 INFO L226 Difference]: Without dead ends: 897 [2025-01-09 11:20:40,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1126, Invalid=4276, Unknown=0, NotChecked=0, Total=5402 [2025-01-09 11:20:40,872 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 1275 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-01-09 11:20:40,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1966 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-01-09 11:20:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2025-01-09 11:20:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 648. [2025-01-09 11:20:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 396 states have (on average 1.2777777777777777) internal successors, (506), 398 states have internal predecessors, (506), 229 states have call successors, (229), 22 states have call predecessors, (229), 22 states have return successors, (229), 227 states have call predecessors, (229), 229 states have call successors, (229) [2025-01-09 11:20:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 964 transitions. [2025-01-09 11:20:41,009 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 964 transitions. Word has length 254 [2025-01-09 11:20:41,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:20:41,010 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 964 transitions. [2025-01-09 11:20:41,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (123), 4 states have call predecessors, (123), 8 states have return successors, (123), 8 states have call predecessors, (123), 8 states have call successors, (123) [2025-01-09 11:20:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 964 transitions. [2025-01-09 11:20:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-01-09 11:20:41,012 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:20:41,012 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:20:41,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 11:20:41,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:20:41,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:20:41,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:20:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash 227991291, now seen corresponding path program 1 times [2025-01-09 11:20:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:20:41,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438760898] [2025-01-09 11:20:41,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:41,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:20:41,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:41,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:41,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:41,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:20:41,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863111245] [2025-01-09 11:20:41,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:20:41,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:20:41,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:20:41,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 11:20:41,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 11:20:41,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-01-09 11:20:42,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-01-09 11:20:42,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:20:42,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 11:20:42,285 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 11:20:42,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes.