./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 93ddecb04a6299d03367d49b2a7c18daa1f10c6a17d17e5a40552766d0a5b65a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 01:36:56,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 01:36:57,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 01:36:57,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 01:36:57,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 01:36:57,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 01:36:57,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 01:36:57,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 01:36:57,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 01:36:57,061 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 01:36:57,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 01:36:57,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 01:36:57,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 01:36:57,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 01:36:57,062 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 01:36:57,064 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 01:36:57,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 01:36:57,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 01:36:57,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 01:36:57,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 01:36:57,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 01:36:57,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 01:36:57,065 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 01:36:57,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 01:36:57,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 01:36:57,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 01:36:57,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 01:36:57,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 01:36:57,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 01:36:57,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 01:36:57,066 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/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 -> 93ddecb04a6299d03367d49b2a7c18daa1f10c6a17d17e5a40552766d0a5b65a [2025-03-17 01:36:57,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 01:36:57,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 01:36:57,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 01:36:57,324 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 01:36:57,324 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 01:36:57,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i [2025-03-17 01:36:58,507 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7de3412/e45ac0c0ee8d40d9a23dd5470de090c7/FLAGffb6c5a8e [2025-03-17 01:36:58,753 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 01:36:58,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i [2025-03-17 01:36:58,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7de3412/e45ac0c0ee8d40d9a23dd5470de090c7/FLAGffb6c5a8e [2025-03-17 01:36:58,771 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7de3412/e45ac0c0ee8d40d9a23dd5470de090c7 [2025-03-17 01:36:58,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 01:36:58,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 01:36:58,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 01:36:58,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 01:36:58,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 01:36:58,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:36:58" (1/1) ... [2025-03-17 01:36:58,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411f8229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:58, skipping insertion in model container [2025-03-17 01:36:58,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:36:58" (1/1) ... [2025-03-17 01:36:58,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 01:36:58,899 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i[919,932] [2025-03-17 01:36:58,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 01:36:58,986 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 01:36:58,996 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i[919,932] [2025-03-17 01:36:59,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 01:36:59,054 INFO L204 MainTranslator]: Completed translation [2025-03-17 01:36:59,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59 WrapperNode [2025-03-17 01:36:59,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 01:36:59,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 01:36:59,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 01:36:59,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 01:36:59,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,086 INFO L138 Inliner]: procedures = 26, calls = 59, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 271 [2025-03-17 01:36:59,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 01:36:59,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 01:36:59,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 01:36:59,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 01:36:59,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,095 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,105 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]. [2025-03-17 01:36:59,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,112 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 01:36:59,129 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 01:36:59,129 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 01:36:59,130 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 01:36:59,131 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (1/1) ... [2025-03-17 01:36:59,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 01:36:59,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 01:36:59,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 01:36:59,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 01:36:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 01:36:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 01:36:59,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 01:36:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 01:36:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 01:36:59,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 01:36:59,253 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 01:36:59,254 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 01:36:59,585 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L213: havoc property_#t~bitwise29#1;havoc property_#t~short30#1; [2025-03-17 01:36:59,639 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-17 01:36:59,640 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 01:36:59,657 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 01:36:59,657 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 01:36:59,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:36:59 BoogieIcfgContainer [2025-03-17 01:36:59,658 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 01:36:59,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 01:36:59,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 01:36:59,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 01:36:59,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:36:58" (1/3) ... [2025-03-17 01:36:59,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9b9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:36:59, skipping insertion in model container [2025-03-17 01:36:59,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:59" (2/3) ... [2025-03-17 01:36:59,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9b9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:36:59, skipping insertion in model container [2025-03-17 01:36:59,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:36:59" (3/3) ... [2025-03-17 01:36:59,666 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i [2025-03-17 01:36:59,677 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 01:36:59,679 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-64.i that has 2 procedures, 111 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 01:36:59,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 01:36:59,734 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;@7e1485e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 01:36:59,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 01:36:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 63 states have internal predecessors, (86), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 01:36:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2025-03-17 01:36:59,750 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 01:36:59,751 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 01:36:59,752 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 01:36:59,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 01:36:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash 331996333, now seen corresponding path program 1 times [2025-03-17 01:36:59,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 01:36:59,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548975289] [2025-03-17 01:36:59,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 01:36:59,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 01:36:59,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-17 01:36:59,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-17 01:36:59,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 01:36:59,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 01:37:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2025-03-17 01:37:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 01:37:00,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548975289] [2025-03-17 01:37:00,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548975289] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 01:37:00,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564418316] [2025-03-17 01:37:00,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 01:37:00,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 01:37:00,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 01:37:00,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 01:37:00,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 01:37:00,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-17 01:37:00,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-17 01:37:00,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 01:37:00,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 01:37:00,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 01:37:00,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 01:37:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2025-03-17 01:37:00,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 01:37:00,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564418316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 01:37:00,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 01:37:00,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 01:37:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335553983] [2025-03-17 01:37:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 01:37:00,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 01:37:00,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 01:37:00,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 01:37:00,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 01:37:00,419 INFO L87 Difference]: Start difference. First operand has 111 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 63 states have internal predecessors, (86), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) [2025-03-17 01:37:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 01:37:00,453 INFO L93 Difference]: Finished difference Result 219 states and 400 transitions. [2025-03-17 01:37:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 01:37:00,455 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) Word has length 278 [2025-03-17 01:37:00,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 01:37:00,459 INFO L225 Difference]: With dead ends: 219 [2025-03-17 01:37:00,459 INFO L226 Difference]: Without dead ends: 109 [2025-03-17 01:37:00,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 01:37:00,468 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 01:37:00,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 01:37:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-17 01:37:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-03-17 01:37:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 01:37:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 174 transitions. [2025-03-17 01:37:00,513 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 174 transitions. Word has length 278 [2025-03-17 01:37:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 01:37:00,513 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 174 transitions. [2025-03-17 01:37:00,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) [2025-03-17 01:37:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 174 transitions. [2025-03-17 01:37:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2025-03-17 01:37:00,518 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 01:37:00,519 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 01:37:00,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 01:37:00,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 01:37:00,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 01:37:00,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 01:37:00,721 INFO L85 PathProgramCache]: Analyzing trace with hash 690045995, now seen corresponding path program 1 times [2025-03-17 01:37:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 01:37:00,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946685702] [2025-03-17 01:37:00,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 01:37:00,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 01:37:00,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-17 01:37:00,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-17 01:37:00,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 01:37:00,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 01:37:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-17 01:37:03,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 01:37:03,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946685702] [2025-03-17 01:37:03,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946685702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 01:37:03,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 01:37:03,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 01:37:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456755494] [2025-03-17 01:37:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 01:37:03,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 01:37:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 01:37:03,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 01:37:03,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 01:37:03,582 INFO L87 Difference]: Start difference. First operand 109 states and 174 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2025-03-17 01:37:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 01:37:03,901 INFO L93 Difference]: Finished difference Result 317 states and 505 transitions. [2025-03-17 01:37:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 01:37:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 278 [2025-03-17 01:37:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 01:37:03,904 INFO L225 Difference]: With dead ends: 317 [2025-03-17 01:37:03,904 INFO L226 Difference]: Without dead ends: 209 [2025-03-17 01:37:03,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 01:37:03,905 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 173 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 01:37:03,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 946 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 01:37:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-03-17 01:37:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 115. [2025-03-17 01:37:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 01:37:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 183 transitions. [2025-03-17 01:37:03,928 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 183 transitions. Word has length 278 [2025-03-17 01:37:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 01:37:03,930 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 183 transitions. [2025-03-17 01:37:03,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2025-03-17 01:37:03,930 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 183 transitions. [2025-03-17 01:37:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2025-03-17 01:37:03,935 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 01:37:03,935 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 01:37:03,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 01:37:03,935 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 01:37:03,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 01:37:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1499932374, now seen corresponding path program 1 times [2025-03-17 01:37:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 01:37:03,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85702490] [2025-03-17 01:37:03,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 01:37:03,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 01:37:03,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-17 01:37:03,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-17 01:37:03,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 01:37:03,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 01:37:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-17 01:37:04,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 01:37:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85702490] [2025-03-17 01:37:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85702490] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 01:37:04,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 01:37:04,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 01:37:04,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536838367] [2025-03-17 01:37:04,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 01:37:04,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 01:37:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 01:37:04,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 01:37:04,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 01:37:04,241 INFO L87 Difference]: Start difference. First operand 115 states and 183 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2025-03-17 01:37:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 01:37:04,478 INFO L93 Difference]: Finished difference Result 413 states and 653 transitions. [2025-03-17 01:37:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 01:37:04,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 278 [2025-03-17 01:37:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 01:37:04,482 INFO L225 Difference]: With dead ends: 413 [2025-03-17 01:37:04,482 INFO L226 Difference]: Without dead ends: 299 [2025-03-17 01:37:04,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 01:37:04,483 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 302 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 01:37:04,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 794 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 01:37:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-03-17 01:37:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 115. [2025-03-17 01:37:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 01:37:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 183 transitions. [2025-03-17 01:37:04,509 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 183 transitions. Word has length 278 [2025-03-17 01:37:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 01:37:04,510 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 183 transitions. [2025-03-17 01:37:04,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2025-03-17 01:37:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 183 transitions. [2025-03-17 01:37:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2025-03-17 01:37:04,512 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 01:37:04,513 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 01:37:04,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 01:37:04,513 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 01:37:04,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 01:37:04,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1696445879, now seen corresponding path program 1 times [2025-03-17 01:37:04,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 01:37:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923662995] [2025-03-17 01:37:04,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 01:37:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 01:37:04,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-17 01:37:04,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-17 01:37:04,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 01:37:04,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 01:37:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-17 01:37:05,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 01:37:05,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923662995] [2025-03-17 01:37:05,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923662995] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 01:37:05,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 01:37:05,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 01:37:05,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026339974] [2025-03-17 01:37:05,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 01:37:05,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 01:37:05,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 01:37:05,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 01:37:05,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 01:37:05,915 INFO L87 Difference]: Start difference. First operand 115 states and 183 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2025-03-17 01:37:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 01:37:06,301 INFO L93 Difference]: Finished difference Result 404 states and 642 transitions. [2025-03-17 01:37:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 01:37:06,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 278 [2025-03-17 01:37:06,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 01:37:06,305 INFO L225 Difference]: With dead ends: 404 [2025-03-17 01:37:06,305 INFO L226 Difference]: Without dead ends: 290 [2025-03-17 01:37:06,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 01:37:06,306 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 200 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 01:37:06,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 800 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 01:37:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-03-17 01:37:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 109. [2025-03-17 01:37:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 61 states have internal predecessors, (81), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 01:37:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 173 transitions. [2025-03-17 01:37:06,323 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 173 transitions. Word has length 278 [2025-03-17 01:37:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 01:37:06,324 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 173 transitions. [2025-03-17 01:37:06,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2025-03-17 01:37:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 173 transitions. [2025-03-17 01:37:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2025-03-17 01:37:06,326 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 01:37:06,326 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 01:37:06,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 01:37:06,326 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 01:37:06,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 01:37:06,327 INFO L85 PathProgramCache]: Analyzing trace with hash 882838281, now seen corresponding path program 1 times [2025-03-17 01:37:06,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 01:37:06,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459036328] [2025-03-17 01:37:06,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 01:37:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 01:37:06,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 280 statements into 1 equivalence classes. [2025-03-17 01:37:06,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 280 of 280 statements. [2025-03-17 01:37:06,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 01:37:06,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat