./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-98.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 184e37531f75678a35e3524a829bba470e1f2673255cf1cb9b451a6dd4595a7b --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 23:50:12,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 23:50:12,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 23:50:12,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 23:50:12,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 23:50:12,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 23:50:12,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 23:50:12,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 23:50:12,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 23:50:12,470 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 23:50:12,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 23:50:12,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 23:50:12,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 23:50:12,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 23:50:12,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 23:50:12,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 23:50:12,473 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 23:50:12,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 23:50:12,473 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 23:50:12,473 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 23:50:12,473 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 23:50:12,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 23:50:12,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 23:50:12,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:50:12,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 23:50:12,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 23:50:12,474 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 -> 184e37531f75678a35e3524a829bba470e1f2673255cf1cb9b451a6dd4595a7b [2025-03-16 23:50:12,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 23:50:12,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 23:50:12,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 23:50:12,738 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 23:50:12,738 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 23:50:12,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-98.i [2025-03-16 23:50:13,888 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4c51e73/6d423cde55a04501a1295a9ea0841f1b/FLAG7621caa9d [2025-03-16 23:50:14,121 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 23:50:14,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-98.i [2025-03-16 23:50:14,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4c51e73/6d423cde55a04501a1295a9ea0841f1b/FLAG7621caa9d [2025-03-16 23:50:14,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4c51e73/6d423cde55a04501a1295a9ea0841f1b [2025-03-16 23:50:14,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 23:50:14,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 23:50:14,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 23:50:14,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 23:50:14,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 23:50:14,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e93b7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14, skipping insertion in model container [2025-03-16 23:50:14,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 23:50:14,260 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-98.i[916,929] [2025-03-16 23:50:14,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:50:14,333 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 23:50:14,339 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-98.i[916,929] [2025-03-16 23:50:14,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:50:14,381 INFO L204 MainTranslator]: Completed translation [2025-03-16 23:50:14,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14 WrapperNode [2025-03-16 23:50:14,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 23:50:14,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 23:50:14,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 23:50:14,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 23:50:14,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,427 INFO L138 Inliner]: procedures = 26, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 326 [2025-03-16 23:50:14,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 23:50:14,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 23:50:14,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 23:50:14,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 23:50:14,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,440 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,461 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]. [2025-03-16 23:50:14,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,473 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 23:50:14,487 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 23:50:14,487 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 23:50:14,487 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 23:50:14,488 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (1/1) ... [2025-03-16 23:50:14,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:50:14,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:50:14,516 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) [2025-03-16 23:50:14,521 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 [2025-03-16 23:50:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 23:50:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 23:50:14,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 23:50:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 23:50:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 23:50:14,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 23:50:14,609 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 23:50:14,611 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 23:50:15,057 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc property_#t~bitwise35#1; [2025-03-16 23:50:15,105 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-16 23:50:15,106 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 23:50:15,124 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 23:50:15,126 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 23:50:15,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:50:15 BoogieIcfgContainer [2025-03-16 23:50:15,127 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 23:50:15,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 23:50:15,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 23:50:15,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 23:50:15,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 11:50:14" (1/3) ... [2025-03-16 23:50:15,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6ac5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:50:15, skipping insertion in model container [2025-03-16 23:50:15,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:50:14" (2/3) ... [2025-03-16 23:50:15,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6ac5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:50:15, skipping insertion in model container [2025-03-16 23:50:15,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:50:15" (3/3) ... [2025-03-16 23:50:15,138 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-98.i [2025-03-16 23:50:15,148 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 23:50:15,149 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-98.i that has 2 procedures, 139 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 23:50:15,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 23:50:15,207 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;@39f8d2d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 23:50:15,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 23:50:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 84 states have internal predecessors, (122), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-16 23:50:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2025-03-16 23:50:15,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:50:15,229 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:50:15,229 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:50:15,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:50:15,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2080677923, now seen corresponding path program 1 times [2025-03-16 23:50:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:50:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332962799] [2025-03-16 23:50:15,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:50:15,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:50:15,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-16 23:50:15,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-16 23:50:15,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:50:15,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:50:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2025-03-16 23:50:15,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:50:15,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332962799] [2025-03-16 23:50:15,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332962799] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 23:50:15,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73555201] [2025-03-16 23:50:15,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:50:15,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 23:50:15,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:50:15,589 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) [2025-03-16 23:50:15,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 23:50:15,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-16 23:50:15,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-16 23:50:15,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:50:15,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:50:15,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 23:50:15,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 23:50:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2025-03-16 23:50:15,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 23:50:15,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73555201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:50:15,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 23:50:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-16 23:50:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823242434] [2025-03-16 23:50:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:50:15,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 23:50:15,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:50:15,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 23:50:15,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:50:15,882 INFO L87 Difference]: Start difference. First operand has 139 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 84 states have internal predecessors, (122), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) [2025-03-16 23:50:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:50:15,921 INFO L93 Difference]: Finished difference Result 275 states and 507 transitions. [2025-03-16 23:50:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 23:50:15,923 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) Word has length 325 [2025-03-16 23:50:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:50:15,930 INFO L225 Difference]: With dead ends: 275 [2025-03-16 23:50:15,930 INFO L226 Difference]: Without dead ends: 137 [2025-03-16 23:50:15,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:50:15,935 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:50:15,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:50:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-03-16 23:50:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2025-03-16 23:50:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 82 states have internal predecessors, (118), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-16 23:50:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 224 transitions. [2025-03-16 23:50:15,989 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 224 transitions. Word has length 325 [2025-03-16 23:50:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:50:15,990 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 224 transitions. [2025-03-16 23:50:15,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) [2025-03-16 23:50:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 224 transitions. [2025-03-16 23:50:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2025-03-16 23:50:15,998 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:50:15,998 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:50:16,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 23:50:16,199 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 [2025-03-16 23:50:16,199 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:50:16,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:50:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1931853086, now seen corresponding path program 1 times [2025-03-16 23:50:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:50:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652124247] [2025-03-16 23:50:16,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:50:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:50:16,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-16 23:50:16,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-16 23:50:16,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:50:16,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:50:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2025-03-16 23:50:16,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:50:16,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652124247] [2025-03-16 23:50:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652124247] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:50:16,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:50:16,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 23:50:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806063370] [2025-03-16 23:50:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:50:16,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 23:50:16,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:50:16,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 23:50:16,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:50:16,802 INFO L87 Difference]: Start difference. First operand 137 states and 224 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:50:16,883 INFO L93 Difference]: Finished difference Result 331 states and 539 transitions. [2025-03-16 23:50:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 23:50:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 325 [2025-03-16 23:50:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:50:16,891 INFO L225 Difference]: With dead ends: 331 [2025-03-16 23:50:16,891 INFO L226 Difference]: Without dead ends: 195 [2025-03-16 23:50:16,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:50:16,893 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 155 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:50:16,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 445 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:50:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-03-16 23:50:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2025-03-16 23:50:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 104 states have internal predecessors, (138), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-16 23:50:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 314 transitions. [2025-03-16 23:50:16,930 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 314 transitions. Word has length 325 [2025-03-16 23:50:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:50:16,932 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 314 transitions. [2025-03-16 23:50:16,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 314 transitions. [2025-03-16 23:50:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2025-03-16 23:50:16,937 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:50:16,937 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:50:16,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 23:50:16,937 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:50:16,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:50:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1087381215, now seen corresponding path program 1 times [2025-03-16 23:50:16,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:50:16,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508909076] [2025-03-16 23:50:16,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:50:16,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:50:16,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-16 23:50:17,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-16 23:50:17,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:50:17,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:50:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2025-03-16 23:50:17,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:50:17,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508909076] [2025-03-16 23:50:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508909076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:50:17,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:50:17,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 23:50:17,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125577822] [2025-03-16 23:50:17,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:50:17,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 23:50:17,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:50:17,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 23:50:17,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:50:17,575 INFO L87 Difference]: Start difference. First operand 194 states and 314 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:50:17,603 INFO L93 Difference]: Finished difference Result 335 states and 541 transitions. [2025-03-16 23:50:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 23:50:17,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 325 [2025-03-16 23:50:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:50:17,607 INFO L225 Difference]: With dead ends: 335 [2025-03-16 23:50:17,608 INFO L226 Difference]: Without dead ends: 195 [2025-03-16 23:50:17,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:50:17,609 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:50:17,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 431 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:50:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-03-16 23:50:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2025-03-16 23:50:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 104 states have (on average 1.3365384615384615) internal successors, (139), 105 states have internal predecessors, (139), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-16 23:50:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 315 transitions. [2025-03-16 23:50:17,642 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 315 transitions. Word has length 325 [2025-03-16 23:50:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:50:17,644 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 315 transitions. [2025-03-16 23:50:17,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 315 transitions. [2025-03-16 23:50:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2025-03-16 23:50:17,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:50:17,649 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:50:17,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 23:50:17,649 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:50:17,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:50:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1981408538, now seen corresponding path program 1 times [2025-03-16 23:50:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:50:17,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390979116] [2025-03-16 23:50:17,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:50:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:50:17,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 326 statements into 1 equivalence classes. [2025-03-16 23:50:17,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 326 of 326 statements. [2025-03-16 23:50:17,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:50:17,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:50:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2025-03-16 23:50:18,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:50:18,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390979116] [2025-03-16 23:50:18,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390979116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:50:18,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:50:18,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 23:50:18,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457054907] [2025-03-16 23:50:18,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:50:18,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 23:50:18,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:50:18,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 23:50:18,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:50:18,222 INFO L87 Difference]: Start difference. First operand 195 states and 315 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:50:18,307 INFO L93 Difference]: Finished difference Result 397 states and 641 transitions. [2025-03-16 23:50:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 23:50:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 326 [2025-03-16 23:50:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:50:18,310 INFO L225 Difference]: With dead ends: 397 [2025-03-16 23:50:18,310 INFO L226 Difference]: Without dead ends: 256 [2025-03-16 23:50:18,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:50:18,313 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 217 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:50:18,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 569 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:50:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2025-03-16 23:50:18,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 227. [2025-03-16 23:50:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 117 states have (on average 1.2905982905982907) internal successors, (151), 118 states have internal predecessors, (151), 106 states have call successors, (106), 3 states have call predecessors, (106), 3 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2025-03-16 23:50:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 363 transitions. [2025-03-16 23:50:18,362 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 363 transitions. Word has length 326 [2025-03-16 23:50:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:50:18,363 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 363 transitions. [2025-03-16 23:50:18,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 363 transitions. [2025-03-16 23:50:18,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2025-03-16 23:50:18,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:50:18,367 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:50:18,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 23:50:18,367 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:50:18,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:50:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1852325819, now seen corresponding path program 1 times [2025-03-16 23:50:18,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:50:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106739660] [2025-03-16 23:50:18,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:50:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:50:18,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 326 statements into 1 equivalence classes. [2025-03-16 23:50:18,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 326 of 326 statements. [2025-03-16 23:50:18,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:50:18,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:50:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2025-03-16 23:50:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:50:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106739660] [2025-03-16 23:50:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106739660] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:50:19,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:50:19,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 23:50:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661514853] [2025-03-16 23:50:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:50:19,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 23:50:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:50:19,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 23:50:19,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:50:19,779 INFO L87 Difference]: Start difference. First operand 227 states and 363 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:50:20,499 INFO L93 Difference]: Finished difference Result 556 states and 882 transitions. [2025-03-16 23:50:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 23:50:20,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 326 [2025-03-16 23:50:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:50:20,503 INFO L225 Difference]: With dead ends: 556 [2025-03-16 23:50:20,504 INFO L226 Difference]: Without dead ends: 415 [2025-03-16 23:50:20,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 23:50:20,505 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 287 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 23:50:20,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1038 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 23:50:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2025-03-16 23:50:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 409. [2025-03-16 23:50:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 223 states have (on average 1.3183856502242153) internal successors, (294), 225 states have internal predecessors, (294), 179 states have call successors, (179), 6 states have call predecessors, (179), 6 states have return successors, (179), 177 states have call predecessors, (179), 179 states have call successors, (179) [2025-03-16 23:50:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 652 transitions. [2025-03-16 23:50:20,573 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 652 transitions. Word has length 326 [2025-03-16 23:50:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:50:20,575 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 652 transitions. [2025-03-16 23:50:20,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2025-03-16 23:50:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 652 transitions. [2025-03-16 23:50:20,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2025-03-16 23:50:20,579 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:50:20,579 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:50:20,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 23:50:20,580 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:50:20,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:50:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -964822138, now seen corresponding path program 1 times [2025-03-16 23:50:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:50:20,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159480535] [2025-03-16 23:50:20,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:50:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:50:20,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 326 statements into 1 equivalence classes. [2025-03-16 23:50:20,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 326 of 326 statements. [2025-03-16 23:50:20,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:50:20,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat