./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 b1b9302ff54a53ad4ae263e58d48d5865cea0604451c8d951e928f2ef921524a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 11:36:03,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 11:36:03,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 11:36:03,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 11:36:03,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 11:36:03,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 11:36:03,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 11:36:03,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 11:36:03,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 11:36:03,401 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 11:36:03,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 11:36:03,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 11:36:03,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 11:36:03,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 11:36:03,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 11:36:03,403 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:36:03,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 11:36:03,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:36:03,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 11:36:03,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 11:36:03,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 11:36:03,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 11:36:03,405 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-jdk21/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 -> b1b9302ff54a53ad4ae263e58d48d5865cea0604451c8d951e928f2ef921524a [2025-01-09 11:36:03,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 11:36:03,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 11:36:03,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 11:36:03,626 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 11:36:03,626 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 11:36:03,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i [2025-01-09 11:36:04,799 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31ab7bf1b/31e853499bed4150b5e91985775192c6/FLAG42f144ebb [2025-01-09 11:36:05,011 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 11:36:05,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i [2025-01-09 11:36:05,017 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31ab7bf1b/31e853499bed4150b5e91985775192c6/FLAG42f144ebb [2025-01-09 11:36:05,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31ab7bf1b/31e853499bed4150b5e91985775192c6 [2025-01-09 11:36:05,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 11:36:05,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 11:36:05,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 11:36:05,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 11:36:05,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 11:36:05,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d34a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05, skipping insertion in model container [2025-01-09 11:36:05,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 11:36:05,166 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i[919,932] [2025-01-09 11:36:05,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:36:05,260 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 11:36:05,270 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i[919,932] [2025-01-09 11:36:05,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:36:05,329 INFO L204 MainTranslator]: Completed translation [2025-01-09 11:36:05,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05 WrapperNode [2025-01-09 11:36:05,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 11:36:05,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 11:36:05,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 11:36:05,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 11:36:05,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,370 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 245 [2025-01-09 11:36:05,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 11:36:05,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 11:36:05,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 11:36:05,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 11:36:05,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,394 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]. [2025-01-09 11:36:05,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,405 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 11:36:05,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 11:36:05,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 11:36:05,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 11:36:05,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (1/1) ... [2025-01-09 11:36:05,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:36:05,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:36:05,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 11:36:05,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 11:36:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 11:36:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 11:36:05,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 11:36:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 11:36:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 11:36:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 11:36:05,534 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 11:36:05,535 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 11:36:05,830 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-01-09 11:36:05,831 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 11:36:05,840 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 11:36:05,840 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 11:36:05,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:36:05 BoogieIcfgContainer [2025-01-09 11:36:05,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 11:36:05,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 11:36:05,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 11:36:05,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 11:36:05,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:36:05" (1/3) ... [2025-01-09 11:36:05,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d70136f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:36:05, skipping insertion in model container [2025-01-09 11:36:05,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:36:05" (2/3) ... [2025-01-09 11:36:05,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d70136f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:36:05, skipping insertion in model container [2025-01-09 11:36:05,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:36:05" (3/3) ... [2025-01-09 11:36:05,848 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i [2025-01-09 11:36:05,858 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 11:36:05,861 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i that has 2 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 11:36:05,901 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 11:36:05,911 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;@33c14d6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 11:36:05,911 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 11:36:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 69 states have internal predecessors, (97), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-01-09 11:36:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 11:36:05,926 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:36:05,927 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:36:05,927 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:36:05,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:36:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2145806255, now seen corresponding path program 1 times [2025-01-09 11:36:05,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:36:05,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540591956] [2025-01-09 11:36:05,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:36:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:36:06,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:36:06,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:36:06,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:36:06,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:36:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-01-09 11:36:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:36:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540591956] [2025-01-09 11:36:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540591956] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:36:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711329850] [2025-01-09 11:36:06,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:36:06,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:36:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:36:06,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 11:36:06,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 11:36:06,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:36:06,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:36:06,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:36:06,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:36:06,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 11:36:06,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:36:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-01-09 11:36:06,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 11:36:06,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711329850] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:36:06,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:36:06,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 11:36:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884727103] [2025-01-09 11:36:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:36:06,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 11:36:06,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:36:06,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 11:36:06,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:36:06,444 INFO L87 Difference]: Start difference. First operand has 105 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 69 states have internal predecessors, (97), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 11:36:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:36:06,465 INFO L93 Difference]: Finished difference Result 204 states and 359 transitions. [2025-01-09 11:36:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 11:36:06,466 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 217 [2025-01-09 11:36:06,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:36:06,471 INFO L225 Difference]: With dead ends: 204 [2025-01-09 11:36:06,471 INFO L226 Difference]: Without dead ends: 102 [2025-01-09 11:36:06,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:36:06,476 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 11:36:06,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 11:36:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-01-09 11:36:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2025-01-09 11:36:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-01-09 11:36:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 159 transitions. [2025-01-09 11:36:06,511 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 159 transitions. Word has length 217 [2025-01-09 11:36:06,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:36:06,511 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 159 transitions. [2025-01-09 11:36:06,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 11:36:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 159 transitions. [2025-01-09 11:36:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 11:36:06,513 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:36:06,513 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:36:06,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 11:36:06,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 11:36:06,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:36:06,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:36:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1781190127, now seen corresponding path program 1 times [2025-01-09 11:36:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:36:06,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903886195] [2025-01-09 11:36:06,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:36:06,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:36:06,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:36:06,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:36:06,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:36:06,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:36:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-01-09 11:36:07,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:36:07,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903886195] [2025-01-09 11:36:07,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903886195] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:36:07,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:36:07,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 11:36:07,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551973248] [2025-01-09 11:36:07,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:36:07,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 11:36:07,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:36:07,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 11:36:07,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 11:36:07,798 INFO L87 Difference]: Start difference. First operand 102 states and 159 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:36:07,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:36:07,989 INFO L93 Difference]: Finished difference Result 202 states and 317 transitions. [2025-01-09 11:36:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 11:36:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2025-01-09 11:36:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:36:07,994 INFO L225 Difference]: With dead ends: 202 [2025-01-09 11:36:07,996 INFO L226 Difference]: Without dead ends: 103 [2025-01-09 11:36:07,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 11:36:07,997 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 85 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 11:36:08,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 229 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 11:36:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-01-09 11:36:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2025-01-09 11:36:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.373134328358209) internal successors, (92), 67 states have internal predecessors, (92), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-01-09 11:36:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 160 transitions. [2025-01-09 11:36:08,016 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 160 transitions. Word has length 217 [2025-01-09 11:36:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:36:08,017 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 160 transitions. [2025-01-09 11:36:08,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:36:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 160 transitions. [2025-01-09 11:36:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2025-01-09 11:36:08,023 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:36:08,024 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:36:08,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 11:36:08,024 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:36:08,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:36:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1750403924, now seen corresponding path program 1 times [2025-01-09 11:36:08,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:36:08,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88730826] [2025-01-09 11:36:08,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:36:08,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:36:08,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes. [2025-01-09 11:36:08,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements. [2025-01-09 11:36:08,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:36:08,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:36:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-01-09 11:36:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:36:08,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88730826] [2025-01-09 11:36:08,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88730826] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:36:08,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:36:08,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 11:36:08,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024406085] [2025-01-09 11:36:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:36:08,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 11:36:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:36:08,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 11:36:08,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 11:36:08,840 INFO L87 Difference]: Start difference. First operand 103 states and 160 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:36:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:36:09,231 INFO L93 Difference]: Finished difference Result 315 states and 500 transitions. [2025-01-09 11:36:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 11:36:09,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2025-01-09 11:36:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:36:09,235 INFO L225 Difference]: With dead ends: 315 [2025-01-09 11:36:09,237 INFO L226 Difference]: Without dead ends: 215 [2025-01-09 11:36:09,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 11:36:09,238 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 125 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 11:36:09,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 540 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 11:36:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-01-09 11:36:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 188. [2025-01-09 11:36:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 117 states have (on average 1.3675213675213675) internal successors, (160), 117 states have internal predecessors, (160), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2025-01-09 11:36:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 296 transitions. [2025-01-09 11:36:09,288 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 296 transitions. Word has length 218 [2025-01-09 11:36:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:36:09,288 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 296 transitions. [2025-01-09 11:36:09,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:36:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 296 transitions. [2025-01-09 11:36:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2025-01-09 11:36:09,292 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:36:09,292 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:36:09,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 11:36:09,292 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:36:09,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:36:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash -243740782, now seen corresponding path program 1 times [2025-01-09 11:36:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:36:09,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596084683] [2025-01-09 11:36:09,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:36:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:36:09,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes. [2025-01-09 11:36:09,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements. [2025-01-09 11:36:09,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:36:09,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:36:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-01-09 11:36:10,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:36:10,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596084683] [2025-01-09 11:36:10,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596084683] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:36:10,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:36:10,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 11:36:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747836665] [2025-01-09 11:36:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:36:10,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 11:36:10,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:36:10,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 11:36:10,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 11:36:10,134 INFO L87 Difference]: Start difference. First operand 188 states and 296 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:36:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:36:11,070 INFO L93 Difference]: Finished difference Result 528 states and 828 transitions. [2025-01-09 11:36:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 11:36:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2025-01-09 11:36:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:36:11,074 INFO L225 Difference]: With dead ends: 528 [2025-01-09 11:36:11,074 INFO L226 Difference]: Without dead ends: 423 [2025-01-09 11:36:11,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-09 11:36:11,076 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 429 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 11:36:11,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 661 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 11:36:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-01-09 11:36:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 401. [2025-01-09 11:36:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 253 states have (on average 1.3280632411067195) internal successors, (336), 255 states have internal predecessors, (336), 142 states have call successors, (142), 5 states have call predecessors, (142), 5 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2025-01-09 11:36:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 620 transitions. [2025-01-09 11:36:11,144 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 620 transitions. Word has length 218 [2025-01-09 11:36:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:36:11,144 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 620 transitions. [2025-01-09 11:36:11,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:36:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 620 transitions. [2025-01-09 11:36:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2025-01-09 11:36:11,146 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:36:11,146 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:36:11,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 11:36:11,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:36:11,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:36:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash -903936132, now seen corresponding path program 1 times [2025-01-09 11:36:11,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:36:11,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671563480] [2025-01-09 11:36:11,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:36:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:36:11,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes. [2025-01-09 11:36:11,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements. [2025-01-09 11:36:11,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:36:11,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat