./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.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 a92f5d1a6a5590db64f6b8ed4b8fabeff75b2e4cde71258ed22ec8ba2c9c0069 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 00:12:18,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 00:12:18,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 00:12:18,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 00:12:18,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 00:12:18,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 00:12:18,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 00:12:18,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 00:12:18,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 00:12:18,697 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 00:12:18,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 00:12:18,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 00:12:18,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 00:12:18,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 00:12:18,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 00:12:18,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 00:12:18,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 00:12:18,700 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 00:12:18,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 00:12:18,700 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 00:12:18,700 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 00:12:18,700 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 00:12:18,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 00:12:18,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:12:18,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 00:12:18,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 00:12:18,702 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 -> a92f5d1a6a5590db64f6b8ed4b8fabeff75b2e4cde71258ed22ec8ba2c9c0069 [2025-03-17 00:12:18,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 00:12:19,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 00:12:19,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 00:12:19,015 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 00:12:19,016 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 00:12:19,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2025-03-17 00:12:20,221 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a17f38e3/316745dc6b4345f58785146bc3d37f2d/FLAG9b3762bcc [2025-03-17 00:12:20,487 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 00:12:20,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2025-03-17 00:12:20,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a17f38e3/316745dc6b4345f58785146bc3d37f2d/FLAG9b3762bcc [2025-03-17 00:12:20,775 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a17f38e3/316745dc6b4345f58785146bc3d37f2d [2025-03-17 00:12:20,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 00:12:20,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 00:12:20,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 00:12:20,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 00:12:20,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 00:12:20,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:12:20" (1/1) ... [2025-03-17 00:12:20,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b19528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:20, skipping insertion in model container [2025-03-17 00:12:20,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:12:20" (1/1) ... [2025-03-17 00:12:20,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 00:12:20,924 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_fillercodesize_ps-cn-250_file-98.i[916,929] [2025-03-17 00:12:21,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:12:21,070 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 00:12:21,080 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_fillercodesize_ps-cn-250_file-98.i[916,929] [2025-03-17 00:12:21,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:12:21,166 INFO L204 MainTranslator]: Completed translation [2025-03-17 00:12:21,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21 WrapperNode [2025-03-17 00:12:21,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 00:12:21,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 00:12:21,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 00:12:21,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 00:12:21,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,232 INFO L138 Inliner]: procedures = 26, calls = 100, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 559 [2025-03-17 00:12:21,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 00:12:21,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 00:12:21,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 00:12:21,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 00:12:21,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,263 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 00:12:21,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,277 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 00:12:21,297 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 00:12:21,297 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 00:12:21,297 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 00:12:21,298 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (1/1) ... [2025-03-17 00:12:21,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:12:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:12:21,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 00:12:21,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 00:12:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 00:12:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 00:12:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 00:12:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 00:12:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 00:12:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 00:12:21,442 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 00:12:21,443 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 00:12:22,149 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L446: havoc property_#t~bitwise60#1; [2025-03-17 00:12:22,231 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-17 00:12:22,232 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 00:12:22,260 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 00:12:22,263 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 00:12:22,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:12:22 BoogieIcfgContainer [2025-03-17 00:12:22,264 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 00:12:22,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 00:12:22,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 00:12:22,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 00:12:22,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:12:20" (1/3) ... [2025-03-17 00:12:22,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488c15fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:12:22, skipping insertion in model container [2025-03-17 00:12:22,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:21" (2/3) ... [2025-03-17 00:12:22,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488c15fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:12:22, skipping insertion in model container [2025-03-17 00:12:22,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:12:22" (3/3) ... [2025-03-17 00:12:22,273 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2025-03-17 00:12:22,285 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 00:12:22,287 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-98.i that has 2 procedures, 238 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 00:12:22,344 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 00:12:22,354 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;@3083e5f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 00:12:22,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 00:12:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 148 states have (on average 1.5135135135135136) internal successors, (224), 149 states have internal predecessors, (224), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2025-03-17 00:12:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2025-03-17 00:12:22,384 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:12:22,386 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:12:22,386 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:12:22,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:12:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1065900392, now seen corresponding path program 1 times [2025-03-17 00:12:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:12:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482881131] [2025-03-17 00:12:22,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:22,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:12:22,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 532 statements into 1 equivalence classes. [2025-03-17 00:12:22,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 532 of 532 statements. [2025-03-17 00:12:22,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:22,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:12:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2025-03-17 00:12:22,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:12:22,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482881131] [2025-03-17 00:12:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482881131] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:12:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290444671] [2025-03-17 00:12:22,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:22,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:12:22,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:12:22,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 00:12:22,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 00:12:23,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 532 statements into 1 equivalence classes. [2025-03-17 00:12:23,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 532 of 532 statements. [2025-03-17 00:12:23,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:23,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:12:23,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 00:12:23,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:12:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2025-03-17 00:12:23,264 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 00:12:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290444671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:12:23,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 00:12:23,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 00:12:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994122421] [2025-03-17 00:12:23,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:12:23,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 00:12:23,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:12:23,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 00:12:23,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:12:23,290 INFO L87 Difference]: Start difference. First operand has 238 states, 148 states have (on average 1.5135135135135136) internal successors, (224), 149 states have internal predecessors, (224), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2025-03-17 00:12:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:12:23,358 INFO L93 Difference]: Finished difference Result 470 states and 875 transitions. [2025-03-17 00:12:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 00:12:23,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) Word has length 532 [2025-03-17 00:12:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:12:23,367 INFO L225 Difference]: With dead ends: 470 [2025-03-17 00:12:23,367 INFO L226 Difference]: Without dead ends: 233 [2025-03-17 00:12:23,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:12:23,376 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:12:23,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:12:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2025-03-17 00:12:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2025-03-17 00:12:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 144 states have (on average 1.4722222222222223) internal successors, (212), 144 states have internal predecessors, (212), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2025-03-17 00:12:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 386 transitions. [2025-03-17 00:12:23,439 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 386 transitions. Word has length 532 [2025-03-17 00:12:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:12:23,441 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 386 transitions. [2025-03-17 00:12:23,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2025-03-17 00:12:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 386 transitions. [2025-03-17 00:12:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2025-03-17 00:12:23,474 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:12:23,474 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:12:23,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 00:12:23,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 00:12:23,675 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:12:23,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:12:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash 83260623, now seen corresponding path program 1 times [2025-03-17 00:12:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:12:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501063582] [2025-03-17 00:12:23,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:12:23,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 533 statements into 1 equivalence classes. [2025-03-17 00:12:24,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 533 of 533 statements. [2025-03-17 00:12:24,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:24,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:12:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2025-03-17 00:12:25,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:12:25,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501063582] [2025-03-17 00:12:25,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501063582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:12:25,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:12:25,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:12:25,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601609802] [2025-03-17 00:12:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:12:25,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:12:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:12:25,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:12:25,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:12:25,224 INFO L87 Difference]: Start difference. First operand 233 states and 386 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2025-03-17 00:12:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:12:25,355 INFO L93 Difference]: Finished difference Result 674 states and 1121 transitions. [2025-03-17 00:12:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:12:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 533 [2025-03-17 00:12:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:12:25,362 INFO L225 Difference]: With dead ends: 674 [2025-03-17 00:12:25,364 INFO L226 Difference]: Without dead ends: 442 [2025-03-17 00:12:25,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:12:25,367 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 380 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:12:25,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1043 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 00:12:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2025-03-17 00:12:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 233. [2025-03-17 00:12:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 144 states have (on average 1.4652777777777777) internal successors, (211), 144 states have internal predecessors, (211), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2025-03-17 00:12:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 385 transitions. [2025-03-17 00:12:25,415 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 385 transitions. Word has length 533 [2025-03-17 00:12:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:12:25,418 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 385 transitions. [2025-03-17 00:12:25,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2025-03-17 00:12:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 385 transitions. [2025-03-17 00:12:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2025-03-17 00:12:25,423 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:12:25,423 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:12:25,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 00:12:25,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:12:25,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:12:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 212343342, now seen corresponding path program 1 times [2025-03-17 00:12:25,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:12:25,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79107304] [2025-03-17 00:12:25,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:25,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:12:25,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 533 statements into 1 equivalence classes. [2025-03-17 00:12:25,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 533 of 533 statements. [2025-03-17 00:12:25,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:25,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:12:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2025-03-17 00:12:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:12:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79107304] [2025-03-17 00:12:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79107304] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:12:27,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:12:27,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 00:12:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886147071] [2025-03-17 00:12:27,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:12:27,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 00:12:27,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:12:27,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 00:12:27,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:12:27,444 INFO L87 Difference]: Start difference. First operand 233 states and 385 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2025-03-17 00:12:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:12:28,187 INFO L93 Difference]: Finished difference Result 744 states and 1222 transitions. [2025-03-17 00:12:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 00:12:28,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 533 [2025-03-17 00:12:28,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:12:28,193 INFO L225 Difference]: With dead ends: 744 [2025-03-17 00:12:28,193 INFO L226 Difference]: Without dead ends: 512 [2025-03-17 00:12:28,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:12:28,194 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 656 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 00:12:28,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1572 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 00:12:28,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2025-03-17 00:12:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 506. [2025-03-17 00:12:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 308 states have (on average 1.4448051948051948) internal successors, (445), 309 states have internal predecessors, (445), 194 states have call successors, (194), 3 states have call predecessors, (194), 3 states have return successors, (194), 193 states have call predecessors, (194), 194 states have call successors, (194) [2025-03-17 00:12:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 833 transitions. [2025-03-17 00:12:28,280 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 833 transitions. Word has length 533 [2025-03-17 00:12:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:12:28,281 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 833 transitions. [2025-03-17 00:12:28,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2025-03-17 00:12:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 833 transitions. [2025-03-17 00:12:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2025-03-17 00:12:28,284 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:12:28,284 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:12:28,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 00:12:28,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:12:28,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:12:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1099847023, now seen corresponding path program 1 times [2025-03-17 00:12:28,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:12:28,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152572808] [2025-03-17 00:12:28,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:12:28,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 533 statements into 1 equivalence classes. [2025-03-17 00:12:28,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 533 of 533 statements. [2025-03-17 00:12:28,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:28,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat