./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.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 ad2fb0f87fb0b281072794eb7cd46dfb553a056ca9f2e2f18210a48553fd4c11 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 00:06:18,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 00:06:18,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 00:06:18,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 00:06:18,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 00:06:18,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 00:06:18,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 00:06:18,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 00:06:18,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 00:06:18,846 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 00:06:18,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 00:06:18,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 00:06:18,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 00:06:18,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 00:06:18,849 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 00:06:18,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 00:06:18,850 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 00:06:18,851 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:06:18,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 00:06:18,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 00:06:18,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 00:06:18,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 00:06:18,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 00:06:18,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 00:06:18,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 00:06:18,852 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 -> ad2fb0f87fb0b281072794eb7cd46dfb553a056ca9f2e2f18210a48553fd4c11 [2025-03-17 00:06:19,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 00:06:19,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 00:06:19,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 00:06:19,145 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 00:06:19,146 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 00:06:19,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2025-03-17 00:06:20,935 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d040eb48/1d75ab79042c42a4a389970a9f3df651/FLAG22f877b41 [2025-03-17 00:06:21,431 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 00:06:21,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2025-03-17 00:06:21,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d040eb48/1d75ab79042c42a4a389970a9f3df651/FLAG22f877b41 [2025-03-17 00:06:21,529 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d040eb48/1d75ab79042c42a4a389970a9f3df651 [2025-03-17 00:06:21,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 00:06:21,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 00:06:21,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 00:06:21,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 00:06:21,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 00:06:21,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:06:21" (1/1) ... [2025-03-17 00:06:21,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a098044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:21, skipping insertion in model container [2025-03-17 00:06:21,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:06:21" (1/1) ... [2025-03-17 00:06:21,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 00:06:21,863 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i[916,929] [2025-03-17 00:06:22,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:06:22,094 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 00:06:22,104 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i[916,929] [2025-03-17 00:06:22,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:06:22,193 INFO L204 MainTranslator]: Completed translation [2025-03-17 00:06:22,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22 WrapperNode [2025-03-17 00:06:22,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 00:06:22,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 00:06:22,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 00:06:22,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 00:06:22,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,341 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 485 [2025-03-17 00:06:22,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 00:06:22,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 00:06:22,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 00:06:22,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 00:06:22,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,441 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 00:06:22,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,475 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 00:06:22,507 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 00:06:22,507 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 00:06:22,507 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 00:06:22,508 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (1/1) ... [2025-03-17 00:06:22,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:06:22,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:06:22,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 00:06:22,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 00:06:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 00:06:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 00:06:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 00:06:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 00:06:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 00:06:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 00:06:22,770 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 00:06:22,772 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 00:06:26,671 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-17 00:06:26,671 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 00:06:26,731 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 00:06:26,731 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 00:06:26,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:06:26 BoogieIcfgContainer [2025-03-17 00:06:26,731 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 00:06:26,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 00:06:26,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 00:06:26,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 00:06:26,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:06:21" (1/3) ... [2025-03-17 00:06:26,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5261a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:06:26, skipping insertion in model container [2025-03-17 00:06:26,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:22" (2/3) ... [2025-03-17 00:06:26,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5261a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:06:26, skipping insertion in model container [2025-03-17 00:06:26,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:06:26" (3/3) ... [2025-03-17 00:06:26,748 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2025-03-17 00:06:26,760 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 00:06:26,765 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-45.i that has 2 procedures, 206 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 00:06:26,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 00:06:26,898 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;@e7682f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 00:06:26,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 00:06:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 136 states have (on average 1.5588235294117647) internal successors, (212), 137 states have internal predecessors, (212), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2025-03-17 00:06:26,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-03-17 00:06:26,957 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:26,958 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:26,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:26,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash 843146233, now seen corresponding path program 1 times [2025-03-17 00:06:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:26,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618167070] [2025-03-17 00:06:26,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:26,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:27,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-03-17 00:06:27,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-03-17 00:06:27,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:27,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2025-03-17 00:06:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:28,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618167070] [2025-03-17 00:06:28,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618167070] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:06:28,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434252672] [2025-03-17 00:06:28,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:28,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:06:28,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:06:28,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 00:06:28,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 00:06:28,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-03-17 00:06:29,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-03-17 00:06:29,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:29,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:29,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 00:06:29,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:06:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2025-03-17 00:06:29,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 00:06:29,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434252672] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:29,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 00:06:29,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 00:06:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894784583] [2025-03-17 00:06:29,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:29,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 00:06:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:29,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 00:06:29,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:06:29,363 INFO L87 Difference]: Start difference. First operand has 206 states, 136 states have (on average 1.5588235294117647) internal successors, (212), 137 states have internal predecessors, (212), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:06:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:29,759 INFO L93 Difference]: Finished difference Result 409 states and 757 transitions. [2025-03-17 00:06:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 00:06:29,815 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 424 [2025-03-17 00:06:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:29,829 INFO L225 Difference]: With dead ends: 409 [2025-03-17 00:06:29,829 INFO L226 Difference]: Without dead ends: 204 [2025-03-17 00:06:29,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:06:29,845 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:29,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 337 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 00:06:29,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-17 00:06:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2025-03-17 00:06:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 135 states have (on average 1.5407407407407407) internal successors, (208), 135 states have internal predecessors, (208), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2025-03-17 00:06:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 342 transitions. [2025-03-17 00:06:30,088 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 342 transitions. Word has length 424 [2025-03-17 00:06:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:30,089 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 342 transitions. [2025-03-17 00:06:30,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:06:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 342 transitions. [2025-03-17 00:06:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-03-17 00:06:30,138 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:30,138 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:30,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 00:06:30,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 00:06:30,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:30,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1351717794, now seen corresponding path program 1 times [2025-03-17 00:06:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931146034] [2025-03-17 00:06:30,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:30,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-03-17 00:06:30,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-03-17 00:06:30,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:30,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:06:31,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:31,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931146034] [2025-03-17 00:06:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931146034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:31,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:06:31,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:06:31,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726767887] [2025-03-17 00:06:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:31,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:06:31,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:31,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:06:31,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:06:31,433 INFO L87 Difference]: Start difference. First operand 204 states and 342 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:31,584 INFO L93 Difference]: Finished difference Result 523 states and 881 transitions. [2025-03-17 00:06:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:06:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2025-03-17 00:06:31,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:31,596 INFO L225 Difference]: With dead ends: 523 [2025-03-17 00:06:31,596 INFO L226 Difference]: Without dead ends: 320 [2025-03-17 00:06:31,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:06:31,602 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 199 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:31,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 793 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 00:06:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2025-03-17 00:06:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 317. [2025-03-17 00:06:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 231 states have (on average 1.5974025974025974) internal successors, (369), 232 states have internal predecessors, (369), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2025-03-17 00:06:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 535 transitions. [2025-03-17 00:06:31,683 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 535 transitions. Word has length 424 [2025-03-17 00:06:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:31,684 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 535 transitions. [2025-03-17 00:06:31,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 535 transitions. [2025-03-17 00:06:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-03-17 00:06:31,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:31,690 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:31,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 00:06:31,690 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:31,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash -382136771, now seen corresponding path program 1 times [2025-03-17 00:06:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:31,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041424467] [2025-03-17 00:06:31,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:31,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-03-17 00:06:31,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-03-17 00:06:31,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:31,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:06:32,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041424467] [2025-03-17 00:06:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041424467] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:32,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:06:32,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:06:32,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210092190] [2025-03-17 00:06:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:32,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:06:32,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:32,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:06:32,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:06:32,134 INFO L87 Difference]: Start difference. First operand 317 states and 535 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:32,236 INFO L93 Difference]: Finished difference Result 865 states and 1450 transitions. [2025-03-17 00:06:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:06:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2025-03-17 00:06:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:32,245 INFO L225 Difference]: With dead ends: 865 [2025-03-17 00:06:32,251 INFO L226 Difference]: Without dead ends: 549 [2025-03-17 00:06:32,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:06:32,257 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 237 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:32,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 661 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:06:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2025-03-17 00:06:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 546. [2025-03-17 00:06:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 386 states have (on average 1.5595854922279793) internal successors, (602), 389 states have internal predecessors, (602), 155 states have call successors, (155), 4 states have call predecessors, (155), 4 states have return successors, (155), 152 states have call predecessors, (155), 155 states have call successors, (155) [2025-03-17 00:06:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 912 transitions. [2025-03-17 00:06:32,377 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 912 transitions. Word has length 424 [2025-03-17 00:06:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:32,377 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 912 transitions. [2025-03-17 00:06:32,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 912 transitions. [2025-03-17 00:06:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-03-17 00:06:32,388 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:32,388 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:32,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 00:06:32,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:32,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:32,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1874774236, now seen corresponding path program 1 times [2025-03-17 00:06:32,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:32,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622350789] [2025-03-17 00:06:32,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:32,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:32,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-03-17 00:06:32,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-03-17 00:06:32,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:32,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:06:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622350789] [2025-03-17 00:06:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622350789] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:06:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:06:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464293827] [2025-03-17 00:06:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:32,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:06:32,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:32,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:06:32,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:06:32,817 INFO L87 Difference]: Start difference. First operand 546 states and 912 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:32,998 INFO L93 Difference]: Finished difference Result 1624 states and 2710 transitions. [2025-03-17 00:06:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:06:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2025-03-17 00:06:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:33,019 INFO L225 Difference]: With dead ends: 1624 [2025-03-17 00:06:33,023 INFO L226 Difference]: Without dead ends: 1079 [2025-03-17 00:06:33,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:06:33,033 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 331 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:33,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 668 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 00:06:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2025-03-17 00:06:33,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2025-03-17 00:06:33,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 758 states have (on average 1.5382585751978892) internal successors, (1166), 764 states have internal predecessors, (1166), 310 states have call successors, (310), 8 states have call predecessors, (310), 8 states have return successors, (310), 304 states have call predecessors, (310), 310 states have call successors, (310) [2025-03-17 00:06:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1786 transitions. [2025-03-17 00:06:33,289 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1786 transitions. Word has length 424 [2025-03-17 00:06:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:33,290 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1786 transitions. [2025-03-17 00:06:33,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1786 transitions. [2025-03-17 00:06:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2025-03-17 00:06:33,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:33,297 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:33,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 00:06:33,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:33,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 792201475, now seen corresponding path program 1 times [2025-03-17 00:06:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406498920] [2025-03-17 00:06:33,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:33,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:33,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 425 statements into 1 equivalence classes. [2025-03-17 00:06:33,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 425 of 425 statements. [2025-03-17 00:06:33,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:33,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:06:36,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:36,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406498920] [2025-03-17 00:06:36,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406498920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:36,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:06:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 00:06:36,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83424472] [2025-03-17 00:06:36,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:36,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 00:06:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:36,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 00:06:36,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 00:06:36,695 INFO L87 Difference]: Start difference. First operand 1077 states and 1786 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:39,665 INFO L93 Difference]: Finished difference Result 4409 states and 7286 transitions. [2025-03-17 00:06:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 00:06:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 425 [2025-03-17 00:06:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:39,701 INFO L225 Difference]: With dead ends: 4409 [2025-03-17 00:06:39,702 INFO L226 Difference]: Without dead ends: 3333 [2025-03-17 00:06:39,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-03-17 00:06:39,708 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 1000 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:39,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1685 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 00:06:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2025-03-17 00:06:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2067. [2025-03-17 00:06:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1580 states have (on average 1.5886075949367089) internal successors, (2510), 1594 states have internal predecessors, (2510), 470 states have call successors, (470), 16 states have call predecessors, (470), 16 states have return successors, (470), 456 states have call predecessors, (470), 470 states have call successors, (470) [2025-03-17 00:06:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3450 transitions. [2025-03-17 00:06:40,134 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3450 transitions. Word has length 425 [2025-03-17 00:06:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:40,138 INFO L471 AbstractCegarLoop]: Abstraction has 2067 states and 3450 transitions. [2025-03-17 00:06:40,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3450 transitions. [2025-03-17 00:06:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2025-03-17 00:06:40,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:40,145 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:40,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 00:06:40,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:40,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1245854814, now seen corresponding path program 1 times [2025-03-17 00:06:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:40,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17215391] [2025-03-17 00:06:40,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:40,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:40,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 425 statements into 1 equivalence classes. [2025-03-17 00:06:40,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 425 of 425 statements. [2025-03-17 00:06:40,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:40,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:06:40,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17215391] [2025-03-17 00:06:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17215391] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:40,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:06:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:06:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907567652] [2025-03-17 00:06:40,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:40,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:06:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:40,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:06:40,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:06:40,771 INFO L87 Difference]: Start difference. First operand 2067 states and 3450 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:42,025 INFO L93 Difference]: Finished difference Result 7897 states and 13149 transitions. [2025-03-17 00:06:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:06:42,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 425 [2025-03-17 00:06:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:42,075 INFO L225 Difference]: With dead ends: 7897 [2025-03-17 00:06:42,075 INFO L226 Difference]: Without dead ends: 5831 [2025-03-17 00:06:42,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:06:42,085 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 549 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:42,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1221 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 00:06:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2025-03-17 00:06:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 5823. [2025-03-17 00:06:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5823 states, 4422 states have (on average 1.5734961555857079) internal successors, (6958), 4466 states have internal predecessors, (6958), 1352 states have call successors, (1352), 48 states have call predecessors, (1352), 48 states have return successors, (1352), 1308 states have call predecessors, (1352), 1352 states have call successors, (1352) [2025-03-17 00:06:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5823 states to 5823 states and 9662 transitions. [2025-03-17 00:06:43,326 INFO L78 Accepts]: Start accepts. Automaton has 5823 states and 9662 transitions. Word has length 425 [2025-03-17 00:06:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:43,328 INFO L471 AbstractCegarLoop]: Abstraction has 5823 states and 9662 transitions. [2025-03-17 00:06:43,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 5823 states and 9662 transitions. [2025-03-17 00:06:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2025-03-17 00:06:43,344 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:43,344 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:43,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 00:06:43,345 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:43,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash 107454883, now seen corresponding path program 1 times [2025-03-17 00:06:43,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:43,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250705939] [2025-03-17 00:06:43,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:43,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 425 statements into 1 equivalence classes. [2025-03-17 00:06:43,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 425 of 425 statements. [2025-03-17 00:06:43,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:43,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:06:46,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250705939] [2025-03-17 00:06:46,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250705939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:46,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:06:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:06:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171426651] [2025-03-17 00:06:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:46,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:06:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:46,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:06:46,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:06:46,377 INFO L87 Difference]: Start difference. First operand 5823 states and 9662 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:48,451 INFO L93 Difference]: Finished difference Result 16483 states and 27244 transitions. [2025-03-17 00:06:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 00:06:48,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 425 [2025-03-17 00:06:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:48,673 INFO L225 Difference]: With dead ends: 16483 [2025-03-17 00:06:48,673 INFO L226 Difference]: Without dead ends: 10661 [2025-03-17 00:06:48,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:06:48,705 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 385 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:48,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1153 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 00:06:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10661 states. [2025-03-17 00:06:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10661 to 10391. [2025-03-17 00:06:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10391 states, 7578 states have (on average 1.534705727104777) internal successors, (11630), 7670 states have internal predecessors, (11630), 2704 states have call successors, (2704), 108 states have call predecessors, (2704), 108 states have return successors, (2704), 2612 states have call predecessors, (2704), 2704 states have call successors, (2704) [2025-03-17 00:06:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10391 states to 10391 states and 17038 transitions. [2025-03-17 00:06:50,819 INFO L78 Accepts]: Start accepts. Automaton has 10391 states and 17038 transitions. Word has length 425 [2025-03-17 00:06:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:50,823 INFO L471 AbstractCegarLoop]: Abstraction has 10391 states and 17038 transitions. [2025-03-17 00:06:50,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:06:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 10391 states and 17038 transitions. [2025-03-17 00:06:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2025-03-17 00:06:50,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:50,851 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:50,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 00:06:50,854 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:50,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1187842107, now seen corresponding path program 1 times [2025-03-17 00:06:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:50,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031828108] [2025-03-17 00:06:50,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:50,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 425 statements into 1 equivalence classes. [2025-03-17 00:06:51,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 425 of 425 statements. [2025-03-17 00:06:51,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:51,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat