./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e25c1e865f9c17a1fadd9c040f12ed15699bfd313ad109ce8205c26bee89007 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 10:38:12,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 10:38:12,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 10:38:12,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 10:38:12,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 10:38:12,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 10:38:12,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 10:38:12,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 10:38:12,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 10:38:12,847 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 10:38:12,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 10:38:12,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 10:38:12,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 10:38:12,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 10:38:12,847 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 10:38:12,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 10:38:12,848 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 10:38:12,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 10:38:12,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 10:38:12,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 10:38:12,849 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 -> 3e25c1e865f9c17a1fadd9c040f12ed15699bfd313ad109ce8205c26bee89007 [2025-03-08 10:38:13,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 10:38:13,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 10:38:13,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 10:38:13,088 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 10:38:13,088 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 10:38:13,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i [2025-03-08 10:38:14,176 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffce262ee/661b845b0962437e9a8a4b3f097befa1/FLAGcdd95d579 [2025-03-08 10:38:14,462 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 10:38:14,463 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i [2025-03-08 10:38:14,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffce262ee/661b845b0962437e9a8a4b3f097befa1/FLAGcdd95d579 [2025-03-08 10:38:14,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffce262ee/661b845b0962437e9a8a4b3f097befa1 [2025-03-08 10:38:14,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 10:38:14,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 10:38:14,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 10:38:14,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 10:38:14,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 10:38:14,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:38:14" (1/1) ... [2025-03-08 10:38:14,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47167c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:14, skipping insertion in model container [2025-03-08 10:38:14,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:38:14" (1/1) ... [2025-03-08 10:38:14,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 10:38:14,860 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-100_file-59.i[916,929] [2025-03-08 10:38:14,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 10:38:14,955 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 10:38:14,964 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-100_file-59.i[916,929] [2025-03-08 10:38:15,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 10:38:15,037 INFO L204 MainTranslator]: Completed translation [2025-03-08 10:38:15,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15 WrapperNode [2025-03-08 10:38:15,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 10:38:15,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 10:38:15,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 10:38:15,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 10:38:15,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,095 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 349 [2025-03-08 10:38:15,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 10:38:15,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 10:38:15,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 10:38:15,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 10:38:15,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,145 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 10:38:15,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,159 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 10:38:15,179 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 10:38:15,179 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 10:38:15,180 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 10:38:15,180 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (1/1) ... [2025-03-08 10:38:15,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 10:38:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:38:15,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 10:38:15,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 10:38:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 10:38:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 10:38:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 10:38:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 10:38:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 10:38:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 10:38:15,308 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 10:38:15,309 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 10:38:15,835 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2025-03-08 10:38:15,836 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 10:38:15,854 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 10:38:15,855 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 10:38:15,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:38:15 BoogieIcfgContainer [2025-03-08 10:38:15,855 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 10:38:15,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 10:38:15,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 10:38:15,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 10:38:15,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:38:14" (1/3) ... [2025-03-08 10:38:15,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0a514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:38:15, skipping insertion in model container [2025-03-08 10:38:15,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:38:15" (2/3) ... [2025-03-08 10:38:15,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0a514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:38:15, skipping insertion in model container [2025-03-08 10:38:15,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:38:15" (3/3) ... [2025-03-08 10:38:15,865 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-59.i [2025-03-08 10:38:15,876 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 10:38:15,880 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-59.i that has 2 procedures, 148 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 10:38:15,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 10:38:15,946 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;@254a643e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 10:38:15,947 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 10:38:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 96 states have (on average 1.46875) internal successors, (141), 97 states have internal predecessors, (141), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-08 10:38:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2025-03-08 10:38:15,968 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:38:15,969 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:38:15,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:38:15,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:38:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash -566053417, now seen corresponding path program 1 times [2025-03-08 10:38:15,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:38:15,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369075598] [2025-03-08 10:38:15,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:15,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:38:16,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 304 statements into 1 equivalence classes. [2025-03-08 10:38:16,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 304 of 304 statements. [2025-03-08 10:38:16,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:16,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:38:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-08 10:38:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:38:16,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369075598] [2025-03-08 10:38:16,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369075598] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 10:38:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823963859] [2025-03-08 10:38:16,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:16,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 10:38:16,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:38:16,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 10:38:16,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 10:38:16,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 304 statements into 1 equivalence classes. [2025-03-08 10:38:16,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 304 of 304 statements. [2025-03-08 10:38:16,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:16,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:38:16,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 10:38:16,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 10:38:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-08 10:38:16,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 10:38:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823963859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:38:16,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 10:38:16,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 10:38:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972499014] [2025-03-08 10:38:16,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:38:16,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 10:38:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:38:16,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 10:38:16,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 10:38:16,686 INFO L87 Difference]: Start difference. First operand has 148 states, 96 states have (on average 1.46875) internal successors, (141), 97 states have internal predecessors, (141), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-08 10:38:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:38:16,733 INFO L93 Difference]: Finished difference Result 281 states and 507 transitions. [2025-03-08 10:38:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 10:38:16,736 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 304 [2025-03-08 10:38:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:38:16,742 INFO L225 Difference]: With dead ends: 281 [2025-03-08 10:38:16,742 INFO L226 Difference]: Without dead ends: 136 [2025-03-08 10:38:16,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 10:38:16,748 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 10:38:16,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 10:38:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-08 10:38:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-03-08 10:38:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.411764705882353) internal successors, (120), 85 states have internal predecessors, (120), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-08 10:38:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2025-03-08 10:38:16,803 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 304 [2025-03-08 10:38:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:38:16,804 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2025-03-08 10:38:16,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-08 10:38:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2025-03-08 10:38:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2025-03-08 10:38:16,813 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:38:16,814 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:38:16,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 10:38:17,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 10:38:17,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:38:17,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:38:17,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1407989160, now seen corresponding path program 1 times [2025-03-08 10:38:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:38:17,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502596155] [2025-03-08 10:38:17,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:17,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:38:17,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 304 statements into 1 equivalence classes. [2025-03-08 10:38:17,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 304 of 304 statements. [2025-03-08 10:38:17,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:17,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:38:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-08 10:38:17,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:38:17,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502596155] [2025-03-08 10:38:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502596155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:38:17,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:38:17,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 10:38:17,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199626795] [2025-03-08 10:38:17,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:38:17,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 10:38:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:38:17,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 10:38:17,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 10:38:17,617 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 10:38:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:38:17,890 INFO L93 Difference]: Finished difference Result 403 states and 649 transitions. [2025-03-08 10:38:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 10:38:17,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 304 [2025-03-08 10:38:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:38:17,895 INFO L225 Difference]: With dead ends: 403 [2025-03-08 10:38:17,897 INFO L226 Difference]: Without dead ends: 270 [2025-03-08 10:38:17,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 10:38:17,900 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 167 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 10:38:17,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 623 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 10:38:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-03-08 10:38:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 251. [2025-03-08 10:38:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 150 states have (on average 1.3933333333333333) internal successors, (209), 150 states have internal predecessors, (209), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-08 10:38:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 405 transitions. [2025-03-08 10:38:17,956 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 405 transitions. Word has length 304 [2025-03-08 10:38:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:38:17,956 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 405 transitions. [2025-03-08 10:38:17,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 10:38:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 405 transitions. [2025-03-08 10:38:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2025-03-08 10:38:17,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:38:17,960 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:38:17,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 10:38:17,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:38:17,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:38:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash 382406189, now seen corresponding path program 1 times [2025-03-08 10:38:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:38:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347999630] [2025-03-08 10:38:17,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:38:17,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 305 statements into 1 equivalence classes. [2025-03-08 10:38:18,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 305 of 305 statements. [2025-03-08 10:38:18,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:18,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:38:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-08 10:38:18,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:38:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347999630] [2025-03-08 10:38:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347999630] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:38:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:38:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 10:38:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048000451] [2025-03-08 10:38:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:38:18,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 10:38:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:38:18,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 10:38:18,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 10:38:18,419 INFO L87 Difference]: Start difference. First operand 251 states and 405 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 10:38:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:38:18,702 INFO L93 Difference]: Finished difference Result 527 states and 847 transitions. [2025-03-08 10:38:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 10:38:18,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 305 [2025-03-08 10:38:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:38:18,707 INFO L225 Difference]: With dead ends: 527 [2025-03-08 10:38:18,707 INFO L226 Difference]: Without dead ends: 394 [2025-03-08 10:38:18,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 10:38:18,709 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 182 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 10:38:18,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 621 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 10:38:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2025-03-08 10:38:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 382. [2025-03-08 10:38:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 231 states have (on average 1.3982683982683983) internal successors, (323), 231 states have internal predecessors, (323), 147 states have call successors, (147), 3 states have call predecessors, (147), 3 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2025-03-08 10:38:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 617 transitions. [2025-03-08 10:38:18,788 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 617 transitions. Word has length 305 [2025-03-08 10:38:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:38:18,790 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 617 transitions. [2025-03-08 10:38:18,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 10:38:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 617 transitions. [2025-03-08 10:38:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-08 10:38:18,794 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:38:18,794 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:38:18,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 10:38:18,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:38:18,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:38:18,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1738251448, now seen corresponding path program 1 times [2025-03-08 10:38:18,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:38:18,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699079160] [2025-03-08 10:38:18,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:18,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:38:18,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-08 10:38:18,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-08 10:38:18,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:18,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:38:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 9 proven. 135 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-08 10:38:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:38:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699079160] [2025-03-08 10:38:19,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699079160] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 10:38:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236480345] [2025-03-08 10:38:19,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:19,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 10:38:19,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:38:19,647 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) [2025-03-08 10:38:19,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 10:38:19,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-08 10:38:19,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-08 10:38:19,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:19,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:38:19,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-08 10:38:19,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 10:38:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 594 proven. 135 refuted. 0 times theorem prover too weak. 3975 trivial. 0 not checked. [2025-03-08 10:38:21,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 10:38:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 9 proven. 135 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-08 10:38:22,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236480345] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 10:38:22,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 10:38:22,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 22 [2025-03-08 10:38:22,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946259969] [2025-03-08 10:38:22,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 10:38:22,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 10:38:22,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:38:22,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 10:38:22,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2025-03-08 10:38:22,623 INFO L87 Difference]: Start difference. First operand 382 states and 617 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 6 states have call successors, (147), 3 states have call predecessors, (147), 6 states have return successors, (147), 6 states have call predecessors, (147), 6 states have call successors, (147) [2025-03-08 10:38:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:38:24,157 INFO L93 Difference]: Finished difference Result 729 states and 1154 transitions. [2025-03-08 10:38:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 10:38:24,157 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 6 states have call successors, (147), 3 states have call predecessors, (147), 6 states have return successors, (147), 6 states have call predecessors, (147), 6 states have call successors, (147) Word has length 306 [2025-03-08 10:38:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:38:24,161 INFO L225 Difference]: With dead ends: 729 [2025-03-08 10:38:24,161 INFO L226 Difference]: Without dead ends: 465 [2025-03-08 10:38:24,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2025-03-08 10:38:24,164 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 781 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 10:38:24,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1400 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 10:38:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-03-08 10:38:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 427. [2025-03-08 10:38:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 267 states have (on average 1.3745318352059925) internal successors, (367), 269 states have internal predecessors, (367), 153 states have call successors, (153), 6 states have call predecessors, (153), 6 states have return successors, (153), 151 states have call predecessors, (153), 153 states have call successors, (153) [2025-03-08 10:38:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 673 transitions. [2025-03-08 10:38:24,230 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 673 transitions. Word has length 306 [2025-03-08 10:38:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:38:24,233 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 673 transitions. [2025-03-08 10:38:24,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 6 states have call successors, (147), 3 states have call predecessors, (147), 6 states have return successors, (147), 6 states have call predecessors, (147), 6 states have call successors, (147) [2025-03-08 10:38:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 673 transitions. [2025-03-08 10:38:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-08 10:38:24,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:38:24,237 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:38:24,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 10:38:24,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-08 10:38:24,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:38:24,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:38:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2031654455, now seen corresponding path program 1 times [2025-03-08 10:38:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:38:24,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771822330] [2025-03-08 10:38:24,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:38:24,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-08 10:38:24,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-08 10:38:24,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:24,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 10:38:24,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403107162] [2025-03-08 10:38:24,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:38:24,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 10:38:24,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:38:24,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 10:38:24,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 10:38:24,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-08 10:38:24,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-08 10:38:24,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:38:24,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:38:24,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-08 10:38:24,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 10:38:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 624 proven. 630 refuted. 0 times theorem prover too weak. 3450 trivial. 0 not checked. [2025-03-08 10:38:28,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 10:38:50,781 WARN L286 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 10:39:24,091 WARN L286 SmtUtils]: Spent 16.20s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-08 10:39:29,704 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)