./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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-59.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 b5a3a78de85206c06265f4a5f6df62e7897a8d9c53ab2b455732af1ef22c4599 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 21:17:41,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 21:17:41,267 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 21:17:41,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 21:17:41,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 21:17:41,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 21:17:41,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 21:17:41,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 21:17:41,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 21:17:41,292 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 21:17:41,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 21:17:41,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 21:17:41,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 21:17:41,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 21:17:41,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 21:17:41,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 21:17:41,295 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 21:17:41,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 21:17:41,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 21:17:41,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 21:17:41,296 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 -> b5a3a78de85206c06265f4a5f6df62e7897a8d9c53ab2b455732af1ef22c4599 [2025-03-03 21:17:41,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 21:17:41,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 21:17:41,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 21:17:41,511 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 21:17:41,511 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 21:17:41,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-59.i [2025-03-03 21:17:42,651 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f97d914a/c27727cd7c194287a7c98d6ac9a048f6/FLAG5bee8ecbf [2025-03-03 21:17:42,918 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 21:17:42,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-59.i [2025-03-03 21:17:42,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f97d914a/c27727cd7c194287a7c98d6ac9a048f6/FLAG5bee8ecbf [2025-03-03 21:17:43,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f97d914a/c27727cd7c194287a7c98d6ac9a048f6 [2025-03-03 21:17:43,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 21:17:43,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 21:17:43,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 21:17:43,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 21:17:43,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 21:17:43,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efdf9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43, skipping insertion in model container [2025-03-03 21:17:43,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 21:17:43,362 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-59.i[919,932] [2025-03-03 21:17:43,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 21:17:43,413 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 21:17:43,420 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-59.i[919,932] [2025-03-03 21:17:43,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 21:17:43,474 INFO L204 MainTranslator]: Completed translation [2025-03-03 21:17:43,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43 WrapperNode [2025-03-03 21:17:43,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 21:17:43,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 21:17:43,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 21:17:43,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 21:17:43,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,525 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2025-03-03 21:17:43,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 21:17:43,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 21:17:43,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 21:17:43,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 21:17:43,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,554 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]. [2025-03-03 21:17:43,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,565 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,580 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 21:17:43,581 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 21:17:43,582 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 21:17:43,582 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 21:17:43,583 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (1/1) ... [2025-03-03 21:17:43,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 21:17:43,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 21:17:43,610 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) [2025-03-03 21:17:43,615 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 [2025-03-03 21:17:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 21:17:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 21:17:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 21:17:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 21:17:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 21:17:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 21:17:43,693 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 21:17:43,695 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 21:17:44,078 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-03-03 21:17:44,078 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 21:17:44,096 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 21:17:44,096 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 21:17:44,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:17:44 BoogieIcfgContainer [2025-03-03 21:17:44,096 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 21:17:44,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 21:17:44,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 21:17:44,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 21:17:44,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:17:43" (1/3) ... [2025-03-03 21:17:44,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301294ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:17:44, skipping insertion in model container [2025-03-03 21:17:44,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:17:43" (2/3) ... [2025-03-03 21:17:44,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301294ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:17:44, skipping insertion in model container [2025-03-03 21:17:44,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:17:44" (3/3) ... [2025-03-03 21:17:44,104 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-59.i [2025-03-03 21:17:44,114 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 21:17:44,117 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-59.i that has 2 procedures, 104 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 21:17:44,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 21:17:44,162 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;@425fb23e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 21:17:44,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 21:17:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 68 states have internal predecessors, (97), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-03 21:17:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-03-03 21:17:44,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 21:17:44,176 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 21:17:44,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 21:17:44,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 21:17:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -788709902, now seen corresponding path program 1 times [2025-03-03 21:17:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 21:17:44,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541051813] [2025-03-03 21:17:44,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 21:17:44,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 21:17:44,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-03-03 21:17:44,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-03-03 21:17:44,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 21:17:44,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 21:17:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-03-03 21:17:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 21:17:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541051813] [2025-03-03 21:17:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541051813] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 21:17:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526604382] [2025-03-03 21:17:44,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 21:17:44,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 21:17:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 21:17:44,504 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) [2025-03-03 21:17:44,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 21:17:44,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-03-03 21:17:44,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-03-03 21:17:44,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 21:17:44,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 21:17:44,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 21:17:44,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 21:17:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-03-03 21:17:44,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 21:17:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526604382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 21:17:44,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 21:17:44,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 21:17:44,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052558002] [2025-03-03 21:17:44,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 21:17:44,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 21:17:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 21:17:44,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 21:17:44,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 21:17:44,733 INFO L87 Difference]: Start difference. First operand has 104 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 68 states have internal predecessors, (97), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-03-03 21:17:44,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 21:17:44,768 INFO L93 Difference]: Finished difference Result 202 states and 359 transitions. [2025-03-03 21:17:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 21:17:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 216 [2025-03-03 21:17:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 21:17:44,775 INFO L225 Difference]: With dead ends: 202 [2025-03-03 21:17:44,775 INFO L226 Difference]: Without dead ends: 101 [2025-03-03 21:17:44,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 21:17:44,779 INFO L435 NwaCegarLoop]: 157 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, 157 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 [2025-03-03 21:17:44,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 21:17:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-03 21:17:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-03-03 21:17:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-03 21:17:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 159 transitions. [2025-03-03 21:17:44,822 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 159 transitions. Word has length 216 [2025-03-03 21:17:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 21:17:44,823 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 159 transitions. [2025-03-03 21:17:44,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-03-03 21:17:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 159 transitions. [2025-03-03 21:17:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-03-03 21:17:44,828 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 21:17:44,828 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 21:17:44,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 21:17:45,029 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 [2025-03-03 21:17:45,029 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 21:17:45,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 21:17:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1663727638, now seen corresponding path program 1 times [2025-03-03 21:17:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 21:17:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269421282] [2025-03-03 21:17:45,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 21:17:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 21:17:45,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-03-03 21:17:45,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-03-03 21:17:45,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 21:17:45,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 21:17:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-03-03 21:17:45,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 21:17:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269421282] [2025-03-03 21:17:45,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269421282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 21:17:45,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 21:17:45,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 21:17:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363825914] [2025-03-03 21:17:45,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 21:17:45,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 21:17:45,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 21:17:45,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 21:17:45,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 21:17:45,559 INFO L87 Difference]: Start difference. First operand 101 states and 159 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-03 21:17:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 21:17:45,744 INFO L93 Difference]: Finished difference Result 298 states and 472 transitions. [2025-03-03 21:17:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 21:17:45,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 216 [2025-03-03 21:17:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 21:17:45,748 INFO L225 Difference]: With dead ends: 298 [2025-03-03 21:17:45,750 INFO L226 Difference]: Without dead ends: 200 [2025-03-03 21:17:45,751 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 [2025-03-03 21:17:45,752 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 118 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 21:17:45,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 455 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 21:17:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-03-03 21:17:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 161. [2025-03-03 21:17:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 90 states have (on average 1.288888888888889) internal successors, (116), 90 states have internal predecessors, (116), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2025-03-03 21:17:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 252 transitions. [2025-03-03 21:17:45,780 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 252 transitions. Word has length 216 [2025-03-03 21:17:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 21:17:45,780 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 252 transitions. [2025-03-03 21:17:45,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-03 21:17:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 252 transitions. [2025-03-03 21:17:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-03-03 21:17:45,784 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 21:17:45,784 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 21:17:45,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 21:17:45,784 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 21:17:45,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 21:17:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash 549098214, now seen corresponding path program 1 times [2025-03-03 21:17:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 21:17:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202939979] [2025-03-03 21:17:45,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 21:17:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 21:17:45,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-03-03 21:17:45,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-03-03 21:17:45,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 21:17:45,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 21:17:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-03-03 21:17:46,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 21:17:46,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202939979] [2025-03-03 21:17:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202939979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 21:17:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 21:17:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 21:17:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671499930] [2025-03-03 21:17:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 21:17:46,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 21:17:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 21:17:46,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 21:17:46,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 21:17:46,151 INFO L87 Difference]: Start difference. First operand 161 states and 252 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-03 21:17:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 21:17:46,322 INFO L93 Difference]: Finished difference Result 367 states and 576 transitions. [2025-03-03 21:17:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 21:17:46,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2025-03-03 21:17:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 21:17:46,326 INFO L225 Difference]: With dead ends: 367 [2025-03-03 21:17:46,326 INFO L226 Difference]: Without dead ends: 269 [2025-03-03 21:17:46,327 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 [2025-03-03 21:17:46,327 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 137 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 21:17:46,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 453 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 21:17:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2025-03-03 21:17:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 257. [2025-03-03 21:17:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 151 states have (on average 1.3311258278145695) internal successors, (201), 151 states have internal predecessors, (201), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-03 21:17:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 405 transitions. [2025-03-03 21:17:46,367 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 405 transitions. Word has length 217 [2025-03-03 21:17:46,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 21:17:46,367 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 405 transitions. [2025-03-03 21:17:46,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-03 21:17:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 405 transitions. [2025-03-03 21:17:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2025-03-03 21:17:46,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 21:17:46,370 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 21:17:46,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 21:17:46,370 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 21:17:46,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 21:17:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1684230369, now seen corresponding path program 1 times [2025-03-03 21:17:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 21:17:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326096935] [2025-03-03 21:17:46,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 21:17:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 21:17:46,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes. [2025-03-03 21:17:46,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements. [2025-03-03 21:17:46,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 21:17:46,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 21:17:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974356752] [2025-03-03 21:17:46,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 21:17:46,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 21:17:46,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 21:17:46,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 21:17:46,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 21:17:46,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes. [2025-03-03 21:17:46,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements. [2025-03-03 21:17:46,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 21:17:46,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 21:17:46,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-03 21:17:46,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 21:17:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 429 proven. 405 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2025-03-03 21:17:49,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 21:18:15,724 WARN L286 SmtUtils]: Spent 12.31s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-03 21:18:30,037 WARN L286 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)