./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-61.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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-co_file-61.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 97692fb21d2590ddfd299a53a26dc32a54ce91956799a82db26e93434d82409c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 12:41:05,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 12:41:05,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 12:41:05,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 12:41:05,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 12:41:05,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 12:41:05,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 12:41:05,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 12:41:05,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 12:41:05,288 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 12:41:05,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 12:41:05,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 12:41:05,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 12:41:05,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 12:41:05,289 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 12:41:05,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 12:41:05,290 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 12:41:05,290 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 12:41:05,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 12:41:05,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 12:41:05,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 12:41:05,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 12:41:05,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 12:41:05,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 12:41:05,292 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 -> 97692fb21d2590ddfd299a53a26dc32a54ce91956799a82db26e93434d82409c [2025-03-08 12:41:05,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 12:41:05,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 12:41:05,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 12:41:05,512 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 12:41:05,512 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 12:41:05,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-61.i [2025-03-08 12:41:06,658 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6a80813/bb77e843e2b44b49890e5e1b3c325735/FLAG5bd1ed2e5 [2025-03-08 12:41:06,905 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 12:41:06,906 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-61.i [2025-03-08 12:41:06,912 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6a80813/bb77e843e2b44b49890e5e1b3c325735/FLAG5bd1ed2e5 [2025-03-08 12:41:07,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6a80813/bb77e843e2b44b49890e5e1b3c325735 [2025-03-08 12:41:07,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 12:41:07,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 12:41:07,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 12:41:07,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 12:41:07,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 12:41:07,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3cf14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07, skipping insertion in model container [2025-03-08 12:41:07,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,256 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 12:41:07,354 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-co_file-61.i[919,932] [2025-03-08 12:41:07,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 12:41:07,424 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 12:41:07,434 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-co_file-61.i[919,932] [2025-03-08 12:41:07,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 12:41:07,484 INFO L204 MainTranslator]: Completed translation [2025-03-08 12:41:07,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07 WrapperNode [2025-03-08 12:41:07,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 12:41:07,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 12:41:07,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 12:41:07,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 12:41:07,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,536 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 273 [2025-03-08 12:41:07,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 12:41:07,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 12:41:07,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 12:41:07,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 12:41:07,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,546 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,566 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]. [2025-03-08 12:41:07,567 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,574 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 12:41:07,584 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 12:41:07,584 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 12:41:07,584 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 12:41:07,584 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (1/1) ... [2025-03-08 12:41:07,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 12:41:07,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 12:41:07,615 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) [2025-03-08 12:41:07,617 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 [2025-03-08 12:41:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 12:41:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 12:41:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 12:41:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 12:41:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 12:41:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 12:41:07,705 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 12:41:07,707 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 12:41:08,025 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L217: havoc property_#t~ite29#1;havoc property_#t~ite28#1;havoc property_#t~bitwise27#1;havoc property_#t~short30#1; [2025-03-08 12:41:08,066 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-08 12:41:08,066 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 12:41:08,085 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 12:41:08,085 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 12:41:08,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:41:08 BoogieIcfgContainer [2025-03-08 12:41:08,085 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 12:41:08,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 12:41:08,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 12:41:08,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 12:41:08,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:41:07" (1/3) ... [2025-03-08 12:41:08,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1972fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:41:08, skipping insertion in model container [2025-03-08 12:41:08,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:07" (2/3) ... [2025-03-08 12:41:08,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1972fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:41:08, skipping insertion in model container [2025-03-08 12:41:08,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:41:08" (3/3) ... [2025-03-08 12:41:08,094 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-61.i [2025-03-08 12:41:08,105 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 12:41:08,107 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-61.i that has 2 procedures, 126 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 12:41:08,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 12:41:08,156 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;@71203825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 12:41:08,156 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 12:41:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 84 states have internal predecessors, (120), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-08 12:41:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 12:41:08,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 12:41:08,170 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 12:41:08,171 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 12:41:08,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 12:41:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1427120366, now seen corresponding path program 1 times [2025-03-08 12:41:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 12:41:08,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096911576] [2025-03-08 12:41:08,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:08,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 12:41:08,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:08,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:08,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:08,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 12:41:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2025-03-08 12:41:08,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 12:41:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096911576] [2025-03-08 12:41:08,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096911576] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 12:41:08,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585472665] [2025-03-08 12:41:08,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:08,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 12:41:08,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 12:41:08,502 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) [2025-03-08 12:41:08,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 12:41:08,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:08,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:08,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:08,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 12:41:08,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 12:41:08,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 12:41:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2025-03-08 12:41:08,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 12:41:08,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585472665] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 12:41:08,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 12:41:08,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 12:41:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314719330] [2025-03-08 12:41:08,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 12:41:08,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 12:41:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 12:41:08,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 12:41:08,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 12:41:08,779 INFO L87 Difference]: Start difference. First operand has 126 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 84 states have internal predecessors, (120), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2025-03-08 12:41:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 12:41:08,816 INFO L93 Difference]: Finished difference Result 246 states and 435 transitions. [2025-03-08 12:41:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 12:41:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 254 [2025-03-08 12:41:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 12:41:08,824 INFO L225 Difference]: With dead ends: 246 [2025-03-08 12:41:08,824 INFO L226 Difference]: Without dead ends: 123 [2025-03-08 12:41:08,826 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 [2025-03-08 12:41:08,828 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 12:41:08,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 12:41:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-08 12:41:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2025-03-08 12:41:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.3950617283950617) internal successors, (113), 81 states have internal predecessors, (113), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-08 12:41:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 193 transitions. [2025-03-08 12:41:08,873 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 193 transitions. Word has length 254 [2025-03-08 12:41:08,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 12:41:08,874 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 193 transitions. [2025-03-08 12:41:08,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2025-03-08 12:41:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 193 transitions. [2025-03-08 12:41:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 12:41:08,878 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 12:41:08,878 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 12:41:08,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 12:41:09,082 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 [2025-03-08 12:41:09,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 12:41:09,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 12:41:09,083 INFO L85 PathProgramCache]: Analyzing trace with hash 891161932, now seen corresponding path program 1 times [2025-03-08 12:41:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 12:41:09,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684922902] [2025-03-08 12:41:09,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 12:41:09,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:09,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:09,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:09,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 12:41:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2025-03-08 12:41:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 12:41:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684922902] [2025-03-08 12:41:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684922902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 12:41:09,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 12:41:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 12:41:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723026941] [2025-03-08 12:41:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 12:41:09,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 12:41:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 12:41:09,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 12:41:09,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 12:41:09,373 INFO L87 Difference]: Start difference. First operand 123 states and 193 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 12:41:09,411 INFO L93 Difference]: Finished difference Result 243 states and 383 transitions. [2025-03-08 12:41:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 12:41:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2025-03-08 12:41:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 12:41:09,416 INFO L225 Difference]: With dead ends: 243 [2025-03-08 12:41:09,416 INFO L226 Difference]: Without dead ends: 123 [2025-03-08 12:41:09,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 12:41:09,417 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 12:41:09,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 12:41:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-08 12:41:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2025-03-08 12:41:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.382716049382716) internal successors, (112), 81 states have internal predecessors, (112), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-08 12:41:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 192 transitions. [2025-03-08 12:41:09,431 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 192 transitions. Word has length 254 [2025-03-08 12:41:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 12:41:09,434 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 192 transitions. [2025-03-08 12:41:09,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 192 transitions. [2025-03-08 12:41:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 12:41:09,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 12:41:09,437 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 12:41:09,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 12:41:09,437 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 12:41:09,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 12:41:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 636425387, now seen corresponding path program 1 times [2025-03-08 12:41:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 12:41:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355964098] [2025-03-08 12:41:09,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 12:41:09,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:09,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:09,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:09,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 12:41:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2025-03-08 12:41:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 12:41:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355964098] [2025-03-08 12:41:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355964098] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 12:41:09,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 12:41:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 12:41:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940349284] [2025-03-08 12:41:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 12:41:09,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 12:41:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 12:41:09,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 12:41:09,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 12:41:09,679 INFO L87 Difference]: Start difference. First operand 123 states and 192 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 12:41:09,768 INFO L93 Difference]: Finished difference Result 346 states and 542 transitions. [2025-03-08 12:41:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 12:41:09,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2025-03-08 12:41:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 12:41:09,772 INFO L225 Difference]: With dead ends: 346 [2025-03-08 12:41:09,772 INFO L226 Difference]: Without dead ends: 226 [2025-03-08 12:41:09,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 12:41:09,777 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 166 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 12:41:09,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 384 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 12:41:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-03-08 12:41:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 148. [2025-03-08 12:41:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 106 states have (on average 1.4528301886792452) internal successors, (154), 106 states have internal predecessors, (154), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-08 12:41:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 234 transitions. [2025-03-08 12:41:09,800 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 234 transitions. Word has length 254 [2025-03-08 12:41:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 12:41:09,801 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 234 transitions. [2025-03-08 12:41:09,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 234 transitions. [2025-03-08 12:41:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 12:41:09,805 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 12:41:09,806 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 12:41:09,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 12:41:09,806 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 12:41:09,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 12:41:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash -208046484, now seen corresponding path program 1 times [2025-03-08 12:41:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 12:41:09,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161251836] [2025-03-08 12:41:09,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 12:41:09,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:09,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:09,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:09,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 12:41:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2025-03-08 12:41:10,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 12:41:10,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161251836] [2025-03-08 12:41:10,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161251836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 12:41:10,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 12:41:10,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 12:41:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967569098] [2025-03-08 12:41:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 12:41:10,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 12:41:10,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 12:41:10,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 12:41:10,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 12:41:10,181 INFO L87 Difference]: Start difference. First operand 148 states and 234 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 12:41:10,230 INFO L93 Difference]: Finished difference Result 438 states and 696 transitions. [2025-03-08 12:41:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 12:41:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2025-03-08 12:41:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 12:41:10,234 INFO L225 Difference]: With dead ends: 438 [2025-03-08 12:41:10,235 INFO L226 Difference]: Without dead ends: 293 [2025-03-08 12:41:10,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 12:41:10,237 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 105 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 12:41:10,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 367 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 12:41:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2025-03-08 12:41:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2025-03-08 12:41:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 206 states have (on average 1.4466019417475728) internal successors, (298), 206 states have internal predecessors, (298), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-08 12:41:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 458 transitions. [2025-03-08 12:41:10,280 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 458 transitions. Word has length 254 [2025-03-08 12:41:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 12:41:10,283 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 458 transitions. [2025-03-08 12:41:10,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:10,283 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 458 transitions. [2025-03-08 12:41:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 12:41:10,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 12:41:10,286 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 12:41:10,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 12:41:10,286 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 12:41:10,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 12:41:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2004997843, now seen corresponding path program 1 times [2025-03-08 12:41:10,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 12:41:10,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364175998] [2025-03-08 12:41:10,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:10,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 12:41:10,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:10,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:10,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:10,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 12:41:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2025-03-08 12:41:10,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 12:41:10,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364175998] [2025-03-08 12:41:10,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364175998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 12:41:10,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 12:41:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 12:41:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073985457] [2025-03-08 12:41:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 12:41:10,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 12:41:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 12:41:10,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 12:41:10,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 12:41:10,604 INFO L87 Difference]: Start difference. First operand 289 states and 458 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 12:41:10,820 INFO L93 Difference]: Finished difference Result 575 states and 913 transitions. [2025-03-08 12:41:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 12:41:10,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2025-03-08 12:41:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 12:41:10,825 INFO L225 Difference]: With dead ends: 575 [2025-03-08 12:41:10,825 INFO L226 Difference]: Without dead ends: 289 [2025-03-08 12:41:10,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 12:41:10,829 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 119 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 12:41:10,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 275 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 12:41:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-03-08 12:41:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2025-03-08 12:41:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 206 states have (on average 1.4368932038834952) internal successors, (296), 206 states have internal predecessors, (296), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-08 12:41:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 456 transitions. [2025-03-08 12:41:10,871 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 456 transitions. Word has length 254 [2025-03-08 12:41:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 12:41:10,872 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 456 transitions. [2025-03-08 12:41:10,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 456 transitions. [2025-03-08 12:41:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 12:41:10,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 12:41:10,875 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 12:41:10,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 12:41:10,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 12:41:10,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 12:41:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1793646930, now seen corresponding path program 1 times [2025-03-08 12:41:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 12:41:10,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511710231] [2025-03-08 12:41:10,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 12:41:10,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:10,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:10,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:10,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 12:41:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2025-03-08 12:41:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 12:41:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511710231] [2025-03-08 12:41:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511710231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 12:41:11,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 12:41:11,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 12:41:11,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457949084] [2025-03-08 12:41:11,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 12:41:11,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 12:41:11,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 12:41:11,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 12:41:11,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 12:41:11,231 INFO L87 Difference]: Start difference. First operand 289 states and 456 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 12:41:11,694 INFO L93 Difference]: Finished difference Result 810 states and 1273 transitions. [2025-03-08 12:41:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 12:41:11,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2025-03-08 12:41:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 12:41:11,697 INFO L225 Difference]: With dead ends: 810 [2025-03-08 12:41:11,699 INFO L226 Difference]: Without dead ends: 524 [2025-03-08 12:41:11,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-08 12:41:11,700 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 235 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 12:41:11,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 402 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 12:41:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2025-03-08 12:41:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 364. [2025-03-08 12:41:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 281 states have (on average 1.4768683274021353) internal successors, (415), 281 states have internal predecessors, (415), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-08 12:41:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 575 transitions. [2025-03-08 12:41:11,765 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 575 transitions. Word has length 254 [2025-03-08 12:41:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 12:41:11,765 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 575 transitions. [2025-03-08 12:41:11,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2025-03-08 12:41:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 575 transitions. [2025-03-08 12:41:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 12:41:11,768 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 12:41:11,768 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 12:41:11,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 12:41:11,769 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 12:41:11,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 12:41:11,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1860653683, now seen corresponding path program 1 times [2025-03-08 12:41:11,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 12:41:11,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497137621] [2025-03-08 12:41:11,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 12:41:11,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 12:41:11,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 12:41:11,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 12:41:11,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 12:41:11,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat