./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.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-pe-ci_file-33.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 2455b112e52a42d84b808fd6137571b9cca3ff5d97324027a8a2378e325a2c67 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 20:27:59,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 20:27:59,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 20:27:59,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 20:27:59,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 20:27:59,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 20:27:59,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 20:27:59,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 20:27:59,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 20:27:59,138 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 20:27:59,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 20:27:59,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 20:27:59,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 20:27:59,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 20:27:59,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 20:27:59,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 20:27:59,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 20:27:59,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 20:27:59,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 20:27:59,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 20:27:59,141 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 20:27:59,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 20:27:59,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 20:27:59,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 20:27:59,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 20:27:59,142 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 20:27:59,142 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 20:27:59,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 20:27:59,142 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 -> 2455b112e52a42d84b808fd6137571b9cca3ff5d97324027a8a2378e325a2c67 [2025-03-03 20:27:59,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 20:27:59,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 20:27:59,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 20:27:59,383 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 20:27:59,383 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 20:27:59,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i [2025-03-03 20:28:00,460 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b19e609/5700a00b714c4d11a5644b0f2b317d27/FLAG10769ff13 [2025-03-03 20:28:00,692 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 20:28:00,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i [2025-03-03 20:28:00,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b19e609/5700a00b714c4d11a5644b0f2b317d27/FLAG10769ff13 [2025-03-03 20:28:00,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b19e609/5700a00b714c4d11a5644b0f2b317d27 [2025-03-03 20:28:00,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 20:28:00,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 20:28:00,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 20:28:00,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 20:28:00,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 20:28:00,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:00,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f04cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00, skipping insertion in model container [2025-03-03 20:28:00,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:00,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 20:28:00,831 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-pe-ci_file-33.i[919,932] [2025-03-03 20:28:00,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 20:28:00,915 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 20:28:00,924 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_fillercodestructure_filler-pe-ci_file-33.i[919,932] [2025-03-03 20:28:00,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 20:28:00,976 INFO L204 MainTranslator]: Completed translation [2025-03-03 20:28:00,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00 WrapperNode [2025-03-03 20:28:00,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 20:28:00,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 20:28:00,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 20:28:00,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 20:28:00,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:00,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,032 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2025-03-03 20:28:01,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 20:28:01,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 20:28:01,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 20:28:01,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 20:28:01,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,064 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 20:28:01,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,075 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 20:28:01,083 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 20:28:01,083 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 20:28:01,083 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 20:28:01,085 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (1/1) ... [2025-03-03 20:28:01,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 20:28:01,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:28:01,110 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 20:28:01,115 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 20:28:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 20:28:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 20:28:01,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 20:28:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 20:28:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 20:28:01,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 20:28:01,192 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 20:28:01,194 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 20:28:01,536 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L168: havoc property_#t~ite19#1;havoc property_#t~bitwise18#1; [2025-03-03 20:28:01,562 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-03 20:28:01,563 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 20:28:01,577 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 20:28:01,577 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 20:28:01,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:28:01 BoogieIcfgContainer [2025-03-03 20:28:01,577 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 20:28:01,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 20:28:01,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 20:28:01,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 20:28:01,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 08:28:00" (1/3) ... [2025-03-03 20:28:01,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553dc1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:28:01, skipping insertion in model container [2025-03-03 20:28:01,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:28:00" (2/3) ... [2025-03-03 20:28:01,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553dc1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:28:01, skipping insertion in model container [2025-03-03 20:28:01,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:28:01" (3/3) ... [2025-03-03 20:28:01,584 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i [2025-03-03 20:28:01,594 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 20:28:01,596 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i that has 2 procedures, 87 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 20:28:01,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 20:28:01,649 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;@1c9d11ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 20:28:01,650 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 20:28:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-03 20:28:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-03 20:28:01,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:28:01,666 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:01,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:28:01,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:28:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash -395813856, now seen corresponding path program 1 times [2025-03-03 20:28:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:28:01,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657018810] [2025-03-03 20:28:01,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:28:01,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:28:01,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-03 20:28:01,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-03 20:28:01,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:28:01,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:28:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2025-03-03 20:28:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:28:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657018810] [2025-03-03 20:28:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657018810] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:28:01,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164611695] [2025-03-03 20:28:01,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:28:01,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:28:01,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:28:01,983 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 20:28:01,985 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 20:28:02,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-03 20:28:02,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-03 20:28:02,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:28:02,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:28:02,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 20:28:02,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:28:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2025-03-03 20:28:02,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 20:28:02,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164611695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:28:02,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 20:28:02,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 20:28:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257227848] [2025-03-03 20:28:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:28:02,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 20:28:02,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:28:02,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 20:28:02,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 20:28:02,207 INFO L87 Difference]: Start difference. First operand has 87 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2025-03-03 20:28:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:28:02,227 INFO L93 Difference]: Finished difference Result 166 states and 289 transitions. [2025-03-03 20:28:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 20:28:02,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2025-03-03 20:28:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:28:02,235 INFO L225 Difference]: With dead ends: 166 [2025-03-03 20:28:02,235 INFO L226 Difference]: Without dead ends: 82 [2025-03-03 20:28:02,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 170 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 20:28:02,242 INFO L435 NwaCegarLoop]: 121 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, 121 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 20:28:02,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 20:28:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-03-03 20:28:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2025-03-03 20:28:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-03 20:28:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 123 transitions. [2025-03-03 20:28:02,273 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 123 transitions. Word has length 169 [2025-03-03 20:28:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:28:02,274 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 123 transitions. [2025-03-03 20:28:02,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2025-03-03 20:28:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 123 transitions. [2025-03-03 20:28:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-03 20:28:02,276 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:28:02,276 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:02,283 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 20:28:02,477 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 20:28:02,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:28:02,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:28:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 685743424, now seen corresponding path program 1 times [2025-03-03 20:28:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:28:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198088290] [2025-03-03 20:28:02,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:28:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:28:02,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-03 20:28:02,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-03 20:28:02,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:28:02,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:28:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2025-03-03 20:28:03,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:28:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198088290] [2025-03-03 20:28:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198088290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:28:03,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:28:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 20:28:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526362266] [2025-03-03 20:28:03,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:28:03,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 20:28:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:28:03,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 20:28:03,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 20:28:03,282 INFO L87 Difference]: Start difference. First operand 82 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-03 20:28:03,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:28:03,558 INFO L93 Difference]: Finished difference Result 245 states and 371 transitions. [2025-03-03 20:28:03,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 20:28:03,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2025-03-03 20:28:03,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:28:03,561 INFO L225 Difference]: With dead ends: 245 [2025-03-03 20:28:03,561 INFO L226 Difference]: Without dead ends: 166 [2025-03-03 20:28:03,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 20:28:03,562 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 85 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 20:28:03,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 303 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 20:28:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-03 20:28:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2025-03-03 20:28:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 97 states have (on average 1.309278350515464) internal successors, (127), 97 states have internal predecessors, (127), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 20:28:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2025-03-03 20:28:03,598 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 169 [2025-03-03 20:28:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:28:03,600 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2025-03-03 20:28:03,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-03 20:28:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2025-03-03 20:28:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-03 20:28:03,602 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:28:03,602 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:03,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 20:28:03,604 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:28:03,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:28:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -463130733, now seen corresponding path program 1 times [2025-03-03 20:28:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:28:03,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777282193] [2025-03-03 20:28:03,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:28:03,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:28:03,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-03 20:28:03,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-03 20:28:03,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:28:03,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:28:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2025-03-03 20:28:03,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:28:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777282193] [2025-03-03 20:28:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777282193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:28:03,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:28:03,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 20:28:03,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286107287] [2025-03-03 20:28:03,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:28:03,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 20:28:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:28:03,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 20:28:03,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 20:28:03,876 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-03 20:28:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:28:04,070 INFO L93 Difference]: Finished difference Result 263 states and 396 transitions. [2025-03-03 20:28:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 20:28:04,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2025-03-03 20:28:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:28:04,075 INFO L225 Difference]: With dead ends: 263 [2025-03-03 20:28:04,076 INFO L226 Difference]: Without dead ends: 162 [2025-03-03 20:28:04,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 20:28:04,077 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 82 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 20:28:04,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 308 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 20:28:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-03 20:28:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2025-03-03 20:28:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 98 states have internal predecessors, (127), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 20:28:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 231 transitions. [2025-03-03 20:28:04,117 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 231 transitions. Word has length 170 [2025-03-03 20:28:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:28:04,118 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 231 transitions. [2025-03-03 20:28:04,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-03 20:28:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 231 transitions. [2025-03-03 20:28:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-03 20:28:04,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:28:04,120 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:04,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 20:28:04,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:28:04,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:28:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash -797634739, now seen corresponding path program 1 times [2025-03-03 20:28:04,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:28:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042086439] [2025-03-03 20:28:04,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:28:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:28:04,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 20:28:04,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 20:28:04,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:28:04,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:28:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2025-03-03 20:28:20,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:28:20,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042086439] [2025-03-03 20:28:20,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042086439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:28:20,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:28:20,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-03 20:28:20,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727103991] [2025-03-03 20:28:20,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:28:20,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 20:28:20,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:28:20,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 20:28:20,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-03 20:28:20,182 INFO L87 Difference]: Start difference. First operand 153 states and 231 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-03 20:28:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:28:22,660 INFO L93 Difference]: Finished difference Result 255 states and 359 transitions. [2025-03-03 20:28:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-03 20:28:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 171 [2025-03-03 20:28:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:28:22,662 INFO L225 Difference]: With dead ends: 255 [2025-03-03 20:28:22,662 INFO L226 Difference]: Without dead ends: 253 [2025-03-03 20:28:22,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2025-03-03 20:28:22,663 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 479 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 20:28:22,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 571 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 20:28:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-03-03 20:28:22,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 175. [2025-03-03 20:28:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 120 states have (on average 1.3) internal successors, (156), 120 states have internal predecessors, (156), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 20:28:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 260 transitions. [2025-03-03 20:28:22,685 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 260 transitions. Word has length 171 [2025-03-03 20:28:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:28:22,686 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 260 transitions. [2025-03-03 20:28:22,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-03 20:28:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 260 transitions. [2025-03-03 20:28:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-03 20:28:22,689 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:28:22,689 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:22,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 20:28:22,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:28:22,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:28:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash 555674958, now seen corresponding path program 1 times [2025-03-03 20:28:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:28:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363871193] [2025-03-03 20:28:22,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:28:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:28:22,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 20:28:22,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 20:28:22,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:28:22,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:28:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 57 proven. 18 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2025-03-03 20:28:25,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:28:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363871193] [2025-03-03 20:28:25,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363871193] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:28:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997102346] [2025-03-03 20:28:25,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:28:25,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:28:25,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:28:25,770 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 20:28:25,770 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 20:28:25,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 20:28:25,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 20:28:25,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:28:25,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:28:25,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-03 20:28:25,862 INFO L279 TraceCheckSpWp]: Computing forward predicates...