./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.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_loopvsstraightlinecode_100-while_file-57.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 f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 13:08:18,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 13:08:18,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 13:08:18,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 13:08:18,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 13:08:18,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 13:08:18,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 13:08:18,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 13:08:18,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 13:08:18,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 13:08:18,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 13:08:18,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 13:08:18,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 13:08:18,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 13:08:18,959 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 13:08:18,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 13:08:18,960 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 13:08:18,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 13:08:18,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 13:08:18,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 13:08:18,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 13:08:18,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 13:08:18,962 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 -> f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 [2025-01-09 13:08:19,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 13:08:19,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 13:08:19,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 13:08:19,273 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 13:08:19,273 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 13:08:19,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2025-01-09 13:08:20,580 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2befae979/a8230f98233a4d58b8d947a5417db491/FLAG03d499dfc [2025-01-09 13:08:20,932 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 13:08:20,933 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2025-01-09 13:08:20,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2befae979/a8230f98233a4d58b8d947a5417db491/FLAG03d499dfc [2025-01-09 13:08:20,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2befae979/a8230f98233a4d58b8d947a5417db491 [2025-01-09 13:08:20,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 13:08:20,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 13:08:20,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 13:08:20,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 13:08:20,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 13:08:20,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:08:20" (1/1) ... [2025-01-09 13:08:20,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebee542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:20, skipping insertion in model container [2025-01-09 13:08:20,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:08:20" (1/1) ... [2025-01-09 13:08:20,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 13:08:21,136 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_loopvsstraightlinecode_100-while_file-57.i[916,929] [2025-01-09 13:08:21,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 13:08:21,267 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 13:08:21,280 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_loopvsstraightlinecode_100-while_file-57.i[916,929] [2025-01-09 13:08:21,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 13:08:21,350 INFO L204 MainTranslator]: Completed translation [2025-01-09 13:08:21,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21 WrapperNode [2025-01-09 13:08:21,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 13:08:21,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 13:08:21,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 13:08:21,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 13:08:21,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,419 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2025-01-09 13:08:21,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 13:08:21,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 13:08:21,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 13:08:21,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 13:08:21,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,459 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 13:08:21,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,481 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 13:08:21,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 13:08:21,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 13:08:21,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 13:08:21,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (1/1) ... [2025-01-09 13:08:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 13:08:21,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 13:08:21,545 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 13:08:21,550 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 13:08:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 13:08:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 13:08:21,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 13:08:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 13:08:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 13:08:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 13:08:21,653 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 13:08:21,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 13:08:22,211 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-01-09 13:08:22,211 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 13:08:22,224 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 13:08:22,226 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 13:08:22,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:08:22 BoogieIcfgContainer [2025-01-09 13:08:22,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 13:08:22,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 13:08:22,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 13:08:22,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 13:08:22,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 01:08:20" (1/3) ... [2025-01-09 13:08:22,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b50ad69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:08:22, skipping insertion in model container [2025-01-09 13:08:22,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:08:21" (2/3) ... [2025-01-09 13:08:22,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b50ad69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:08:22, skipping insertion in model container [2025-01-09 13:08:22,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:08:22" (3/3) ... [2025-01-09 13:08:22,237 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-57.i [2025-01-09 13:08:22,251 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 13:08:22,254 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-57.i that has 2 procedures, 110 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 13:08:22,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 13:08:22,331 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;@5e85bf35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 13:08:22,332 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 13:08:22,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-01-09 13:08:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-01-09 13:08:22,365 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 13:08:22,366 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:22,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 13:08:22,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 13:08:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash -414407665, now seen corresponding path program 1 times [2025-01-09 13:08:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 13:08:22,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861140929] [2025-01-09 13:08:22,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 13:08:22,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 13:08:22,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-01-09 13:08:22,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-01-09 13:08:22,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 13:08:22,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 13:08:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-01-09 13:08:22,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 13:08:22,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861140929] [2025-01-09 13:08:22,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861140929] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 13:08:22,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757286533] [2025-01-09 13:08:22,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 13:08:22,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 13:08:22,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 13:08:22,804 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 13:08:22,806 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 13:08:22,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-01-09 13:08:23,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-01-09 13:08:23,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 13:08:23,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 13:08:23,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 13:08:23,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 13:08:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-01-09 13:08:23,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 13:08:23,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757286533] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 13:08:23,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 13:08:23,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 13:08:23,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354793758] [2025-01-09 13:08:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 13:08:23,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 13:08:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 13:08:23,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 13:08:23,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 13:08:23,117 INFO L87 Difference]: Start difference. First operand has 110 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) 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, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2025-01-09 13:08:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 13:08:23,159 INFO L93 Difference]: Finished difference Result 214 states and 381 transitions. [2025-01-09 13:08:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 13:08:23,162 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, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) Word has length 227 [2025-01-09 13:08:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 13:08:23,172 INFO L225 Difference]: With dead ends: 214 [2025-01-09 13:08:23,172 INFO L226 Difference]: Without dead ends: 107 [2025-01-09 13:08:23,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 228 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 13:08:23,180 INFO L435 NwaCegarLoop]: 170 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, 170 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 13:08:23,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 13:08:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-01-09 13:08:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2025-01-09 13:08:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-01-09 13:08:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 170 transitions. [2025-01-09 13:08:23,231 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 170 transitions. Word has length 227 [2025-01-09 13:08:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 13:08:23,233 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 170 transitions. [2025-01-09 13:08:23,233 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, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2025-01-09 13:08:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 170 transitions. [2025-01-09 13:08:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-01-09 13:08:23,238 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 13:08:23,238 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:23,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 13:08:23,441 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 13:08:23,441 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 13:08:23,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 13:08:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash 538439303, now seen corresponding path program 1 times [2025-01-09 13:08:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 13:08:23,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511936630] [2025-01-09 13:08:23,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 13:08:23,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 13:08:23,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-01-09 13:08:23,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-01-09 13:08:23,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 13:08:23,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 13:09:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-01-09 13:09:09,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 13:09:09,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511936630] [2025-01-09 13:09:09,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511936630] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 13:09:09,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 13:09:09,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-01-09 13:09:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191961107] [2025-01-09 13:09:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 13:09:09,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 13:09:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 13:09:09,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 13:09:09,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2025-01-09 13:09:09,798 INFO L87 Difference]: Start difference. First operand 107 states and 170 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2025-01-09 13:09:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 13:09:13,608 INFO L93 Difference]: Finished difference Result 527 states and 825 transitions. [2025-01-09 13:09:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 13:09:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 227 [2025-01-09 13:09:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 13:09:13,616 INFO L225 Difference]: With dead ends: 527 [2025-01-09 13:09:13,619 INFO L226 Difference]: Without dead ends: 423 [2025-01-09 13:09:13,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2025-01-09 13:09:13,621 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 1110 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-01-09 13:09:13,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1022 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-01-09 13:09:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-01-09 13:09:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 189. [2025-01-09 13:09:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 114 states have (on average 1.3771929824561404) internal successors, (157), 114 states have internal predecessors, (157), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2025-01-09 13:09:13,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 301 transitions. [2025-01-09 13:09:13,683 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 301 transitions. Word has length 227 [2025-01-09 13:09:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 13:09:13,685 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 301 transitions. [2025-01-09 13:09:13,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2025-01-09 13:09:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 301 transitions. [2025-01-09 13:09:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-01-09 13:09:13,690 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 13:09:13,691 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:13,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 13:09:13,691 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 13:09:13,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 13:09:13,693 INFO L85 PathProgramCache]: Analyzing trace with hash 796604741, now seen corresponding path program 1 times [2025-01-09 13:09:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 13:09:13,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131820319] [2025-01-09 13:09:13,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 13:09:13,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 13:09:13,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-01-09 13:09:13,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-01-09 13:09:13,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 13:09:13,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 13:09:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-01-09 13:09:33,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 13:09:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131820319] [2025-01-09 13:09:33,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131820319] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 13:09:33,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 13:09:33,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-09 13:09:33,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584096306] [2025-01-09 13:09:33,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 13:09:33,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 13:09:33,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 13:09:33,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 13:09:33,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-01-09 13:09:33,272 INFO L87 Difference]: Start difference. First operand 189 states and 301 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2025-01-09 13:09:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 13:09:36,523 INFO L93 Difference]: Finished difference Result 510 states and 800 transitions. [2025-01-09 13:09:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 13:09:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 227 [2025-01-09 13:09:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 13:09:36,527 INFO L225 Difference]: With dead ends: 510 [2025-01-09 13:09:36,527 INFO L226 Difference]: Without dead ends: 406 [2025-01-09 13:09:36,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2025-01-09 13:09:36,529 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 848 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-09 13:09:36,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 869 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-09 13:09:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2025-01-09 13:09:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 189. [2025-01-09 13:09:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 114 states have (on average 1.3771929824561404) internal successors, (157), 114 states have internal predecessors, (157), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2025-01-09 13:09:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 301 transitions. [2025-01-09 13:09:36,554 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 301 transitions. Word has length 227 [2025-01-09 13:09:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 13:09:36,555 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 301 transitions. [2025-01-09 13:09:36,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2025-01-09 13:09:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 301 transitions. [2025-01-09 13:09:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-01-09 13:09:36,558 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 13:09:36,558 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:36,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 13:09:36,558 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 13:09:36,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 13:09:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 256538751, now seen corresponding path program 1 times [2025-01-09 13:09:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 13:09:36,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875238927] [2025-01-09 13:09:36,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 13:09:36,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 13:09:36,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-01-09 13:09:36,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-01-09 13:09:36,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 13:09:36,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat