./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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/pthread-atomic/read_write_lock-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:31:00,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:31:00,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:31:00,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:31:00,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:31:00,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:31:00,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:31:00,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:31:00,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:31:00,380 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:31:00,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:31:00,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:31:00,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:31:00,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:31:00,381 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:31:00,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:31:00,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:31:00,381 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:31:00,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:31:00,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:31:00,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:31:00,382 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:31:00,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:31:00,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:31:00,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:00,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:31:00,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:31:00,383 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:31:00,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:31:00,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:31:00,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:31:00,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:31:00,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:31:00,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:31:00,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:31:00,384 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 ! overflow) ) 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 -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2025-02-06 18:31:00,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:31:00,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:31:00,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:31:00,611 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:31:00,611 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:31:00,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2025-02-06 18:31:01,893 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d463fb86/aec7437db7d14bc38098dc42a6e80ccf/FLAG38c6e598d [2025-02-06 18:31:02,176 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:31:02,176 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2025-02-06 18:31:02,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d463fb86/aec7437db7d14bc38098dc42a6e80ccf/FLAG38c6e598d [2025-02-06 18:31:02,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d463fb86/aec7437db7d14bc38098dc42a6e80ccf [2025-02-06 18:31:02,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:31:02,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:31:02,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:02,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:31:02,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:31:02,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df9af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02, skipping insertion in model container [2025-02-06 18:31:02,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:31:02,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:02,421 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:31:02,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:02,490 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:31:02,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02 WrapperNode [2025-02-06 18:31:02,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:02,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:02,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:31:02,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:31:02,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,518 INFO L138 Inliner]: procedures = 172, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2025-02-06 18:31:02,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:02,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:31:02,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:31:02,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:31:02,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,540 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]. [2025-02-06 18:31:02,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,543 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:31:02,551 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:31:02,551 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:31:02,552 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:31:02,552 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (1/1) ... [2025-02-06 18:31:02,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:02,591 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) [2025-02-06 18:31:02,593 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 [2025-02-06 18:31:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:31:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:31:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2025-02-06 18:31:02,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2025-02-06 18:31:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:31:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:31:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:31:02,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:31:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2025-02-06 18:31:02,610 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2025-02-06 18:31:02,611 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:31:02,704 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:31:02,705 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:31:02,840 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:31:02,841 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:31:02,956 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:31:02,960 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:31:02,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:02 BoogieIcfgContainer [2025-02-06 18:31:02,961 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:31:02,963 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:31:02,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:31:02,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:31:02,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:31:02" (1/3) ... [2025-02-06 18:31:02,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d0150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:02, skipping insertion in model container [2025-02-06 18:31:02,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:02" (2/3) ... [2025-02-06 18:31:02,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d0150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:02, skipping insertion in model container [2025-02-06 18:31:02,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:02" (3/3) ... [2025-02-06 18:31:02,971 INFO L128 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2025-02-06 18:31:02,983 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:31:02,985 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG read_write_lock-2.i that has 3 procedures, 36 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-02-06 18:31:02,985 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:31:03,025 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 18:31:03,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 56 transitions, 140 flow [2025-02-06 18:31:03,074 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2025-02-06 18:31:03,075 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 18:31:03,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 52 events. 0/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-06 18:31:03,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 56 transitions, 140 flow [2025-02-06 18:31:03,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 121 flow [2025-02-06 18:31:03,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:03,097 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;@1258a754, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:03,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-02-06 18:31:03,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:03,104 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:31:03,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:03,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:03,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:31:03,105 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:03,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1495544843, now seen corresponding path program 1 times [2025-02-06 18:31:03,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:03,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211525973] [2025-02-06 18:31:03,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:03,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:03,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:03,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:03,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:03,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:03,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211525973] [2025-02-06 18:31:03,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211525973] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:03,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:03,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:31:03,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347642062] [2025-02-06 18:31:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:03,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:03,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:03,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:03,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:03,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:03,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:03,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:03,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:03,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:07,004 INFO L124 PetriNetUnfolderBase]: 64590/88976 cut-off events. [2025-02-06 18:31:07,004 INFO L125 PetriNetUnfolderBase]: For 6412/6412 co-relation queries the response was YES. [2025-02-06 18:31:07,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181649 conditions, 88976 events. 64590/88976 cut-off events. For 6412/6412 co-relation queries the response was YES. Maximal size of possible extension queue 2261. Compared 569056 event pairs, 23709 based on Foata normal form. 0/83103 useless extension candidates. Maximal degree in co-relation 164063. Up to 46087 conditions per place. [2025-02-06 18:31:07,455 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 77 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2025-02-06 18:31:07,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 376 flow [2025-02-06 18:31:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-02-06 18:31:07,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2025-02-06 18:31:07,464 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 121 flow. Second operand 3 states and 110 transitions. [2025-02-06 18:31:07,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 376 flow [2025-02-06 18:31:08,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 86 transitions, 354 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-06 18:31:08,071 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 176 flow [2025-02-06 18:31:08,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2025-02-06 18:31:08,075 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2025-02-06 18:31:08,075 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 176 flow [2025-02-06 18:31:08,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:08,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:08,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:08,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:31:08,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:08,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1875148156, now seen corresponding path program 1 times [2025-02-06 18:31:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655016193] [2025-02-06 18:31:08,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:08,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:31:08,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:31:08,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:08,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:08,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:08,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655016193] [2025-02-06 18:31:08,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655016193] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:08,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:08,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:08,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097330840] [2025-02-06 18:31:08,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:08,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:08,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:08,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:08,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:08,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:08,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:08,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:08,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:10,414 INFO L124 PetriNetUnfolderBase]: 37862/53298 cut-off events. [2025-02-06 18:31:10,414 INFO L125 PetriNetUnfolderBase]: For 15409/15419 co-relation queries the response was YES. [2025-02-06 18:31:10,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118488 conditions, 53298 events. 37862/53298 cut-off events. For 15409/15419 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 327814 event pairs, 8659 based on Foata normal form. 3187/54918 useless extension candidates. Maximal degree in co-relation 16535. Up to 29793 conditions per place. [2025-02-06 18:31:10,596 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 93 selfloop transitions, 11 changer transitions 18/124 dead transitions. [2025-02-06 18:31:10,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 584 flow [2025-02-06 18:31:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:31:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:31:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-02-06 18:31:10,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2025-02-06 18:31:10,598 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 176 flow. Second operand 4 states and 152 transitions. [2025-02-06 18:31:10,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 124 transitions, 584 flow [2025-02-06 18:31:10,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 124 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:10,622 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 225 flow [2025-02-06 18:31:10,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2025-02-06 18:31:10,623 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2025-02-06 18:31:10,623 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 225 flow [2025-02-06 18:31:10,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:10,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:10,623 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:10,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:31:10,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:10,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1875148157, now seen corresponding path program 1 times [2025-02-06 18:31:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021305932] [2025-02-06 18:31:10,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:10,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:31:10,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:31:10,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:10,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:10,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021305932] [2025-02-06 18:31:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021305932] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:10,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:10,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:10,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746430434] [2025-02-06 18:31:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:10,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:10,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:10,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:10,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:10,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:10,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:10,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:10,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:12,573 INFO L124 PetriNetUnfolderBase]: 33255/47009 cut-off events. [2025-02-06 18:31:12,573 INFO L125 PetriNetUnfolderBase]: For 18294/18297 co-relation queries the response was YES. [2025-02-06 18:31:12,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109272 conditions, 47009 events. 33255/47009 cut-off events. For 18294/18297 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 286550 event pairs, 5718 based on Foata normal form. 1271/48271 useless extension candidates. Maximal degree in co-relation 36396. Up to 23329 conditions per place. [2025-02-06 18:31:12,740 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 93 selfloop transitions, 15 changer transitions 12/122 dead transitions. [2025-02-06 18:31:12,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 122 transitions, 623 flow [2025-02-06 18:31:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:31:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:31:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2025-02-06 18:31:12,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6517857142857143 [2025-02-06 18:31:12,745 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 225 flow. Second operand 4 states and 146 transitions. [2025-02-06 18:31:12,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 122 transitions, 623 flow [2025-02-06 18:31:12,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:31:12,755 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 298 flow [2025-02-06 18:31:12,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2025-02-06 18:31:12,756 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2025-02-06 18:31:12,756 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 298 flow [2025-02-06 18:31:12,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:12,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:12,756 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:12,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:31:12,757 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:12,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash -479533268, now seen corresponding path program 1 times [2025-02-06 18:31:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:12,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522372966] [2025-02-06 18:31:12,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:12,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:12,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:31:12,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:31:12,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:12,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:12,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522372966] [2025-02-06 18:31:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522372966] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:12,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:12,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626293287] [2025-02-06 18:31:12,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:12,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:12,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:12,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:12,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:12,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:12,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:12,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:12,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:12,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:14,667 INFO L124 PetriNetUnfolderBase]: 34383/48450 cut-off events. [2025-02-06 18:31:14,668 INFO L125 PetriNetUnfolderBase]: For 33134/33137 co-relation queries the response was YES. [2025-02-06 18:31:14,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116857 conditions, 48450 events. 34383/48450 cut-off events. For 33134/33137 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 294064 event pairs, 22814 based on Foata normal form. 996/49437 useless extension candidates. Maximal degree in co-relation 38216. Up to 38824 conditions per place. [2025-02-06 18:31:14,820 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 75 selfloop transitions, 11 changer transitions 6/94 dead transitions. [2025-02-06 18:31:14,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 566 flow [2025-02-06 18:31:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-02-06 18:31:14,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 18:31:14,822 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 298 flow. Second operand 3 states and 104 transitions. [2025-02-06 18:31:14,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 566 flow [2025-02-06 18:31:14,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 534 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:14,851 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 312 flow [2025-02-06 18:31:14,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2025-02-06 18:31:14,852 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2025-02-06 18:31:14,852 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 312 flow [2025-02-06 18:31:14,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:14,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:14,853 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:14,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:31:14,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:14,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1786440296, now seen corresponding path program 1 times [2025-02-06 18:31:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857805910] [2025-02-06 18:31:14,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:14,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:14,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:14,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:14,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:14,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:14,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857805910] [2025-02-06 18:31:14,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857805910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:14,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:14,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:31:14,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136618231] [2025-02-06 18:31:14,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:14,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:14,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:14,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:14,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:31:14,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:14,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:14,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:14,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:14,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:16,544 INFO L124 PetriNetUnfolderBase]: 22974/32717 cut-off events. [2025-02-06 18:31:16,545 INFO L125 PetriNetUnfolderBase]: For 23625/23628 co-relation queries the response was YES. [2025-02-06 18:31:16,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78670 conditions, 32717 events. 22974/32717 cut-off events. For 23625/23628 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 188148 event pairs, 3416 based on Foata normal form. 351/33059 useless extension candidates. Maximal degree in co-relation 37446. Up to 14907 conditions per place. [2025-02-06 18:31:16,652 INFO L140 encePairwiseOnDemand]: 42/56 looper letters, 110 selfloop transitions, 14 changer transitions 14/140 dead transitions. [2025-02-06 18:31:16,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 140 transitions, 747 flow [2025-02-06 18:31:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:16,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2025-02-06 18:31:16,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2025-02-06 18:31:16,654 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 312 flow. Second operand 7 states and 180 transitions. [2025-02-06 18:31:16,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 140 transitions, 747 flow [2025-02-06 18:31:16,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 140 transitions, 717 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:16,761 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 271 flow [2025-02-06 18:31:16,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2025-02-06 18:31:16,762 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2025-02-06 18:31:16,762 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 271 flow [2025-02-06 18:31:16,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:16,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:16,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:16,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:31:16,763 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:16,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1980634885, now seen corresponding path program 1 times [2025-02-06 18:31:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:16,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036440174] [2025-02-06 18:31:16,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:16,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:16,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:16,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:16,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:16,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:16,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036440174] [2025-02-06 18:31:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036440174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:16,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:16,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:31:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741957464] [2025-02-06 18:31:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:16,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:16,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:16,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:31:16,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:16,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:16,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:16,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:16,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:18,052 INFO L124 PetriNetUnfolderBase]: 22921/32603 cut-off events. [2025-02-06 18:31:18,052 INFO L125 PetriNetUnfolderBase]: For 20574/20577 co-relation queries the response was YES. [2025-02-06 18:31:18,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79441 conditions, 32603 events. 22921/32603 cut-off events. For 20574/20577 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 188229 event pairs, 2468 based on Foata normal form. 235/32829 useless extension candidates. Maximal degree in co-relation 40243. Up to 18926 conditions per place. [2025-02-06 18:31:18,176 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 85 selfloop transitions, 11 changer transitions 53/151 dead transitions. [2025-02-06 18:31:18,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 151 transitions, 783 flow [2025-02-06 18:31:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:31:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:31:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2025-02-06 18:31:18,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2025-02-06 18:31:18,177 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 271 flow. Second operand 8 states and 198 transitions. [2025-02-06 18:31:18,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 151 transitions, 783 flow [2025-02-06 18:31:18,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 151 transitions, 741 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-02-06 18:31:18,516 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 248 flow [2025-02-06 18:31:18,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=248, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2025-02-06 18:31:18,516 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2025-02-06 18:31:18,516 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 248 flow [2025-02-06 18:31:18,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:18,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:18,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:18,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:31:18,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:18,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:18,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1363632620, now seen corresponding path program 1 times [2025-02-06 18:31:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:18,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169445315] [2025-02-06 18:31:18,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:18,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:18,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:18,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:18,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:18,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:18,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:18,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169445315] [2025-02-06 18:31:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169445315] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:18,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:18,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:31:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112904927] [2025-02-06 18:31:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:18,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:18,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:18,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:18,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:31:18,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:18,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:18,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:18,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:18,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:19,612 INFO L124 PetriNetUnfolderBase]: 18266/25913 cut-off events. [2025-02-06 18:31:19,613 INFO L125 PetriNetUnfolderBase]: For 15327/15330 co-relation queries the response was YES. [2025-02-06 18:31:19,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61566 conditions, 25913 events. 18266/25913 cut-off events. For 15327/15330 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 141637 event pairs, 2687 based on Foata normal form. 333/26237 useless extension candidates. Maximal degree in co-relation 60706. Up to 14165 conditions per place. [2025-02-06 18:31:19,694 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 96 selfloop transitions, 10 changer transitions 15/123 dead transitions. [2025-02-06 18:31:19,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 123 transitions, 614 flow [2025-02-06 18:31:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2025-02-06 18:31:19,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42091836734693877 [2025-02-06 18:31:19,696 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 248 flow. Second operand 7 states and 165 transitions. [2025-02-06 18:31:19,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 123 transitions, 614 flow [2025-02-06 18:31:19,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 123 transitions, 576 flow, removed 5 selfloop flow, removed 7 redundant places. [2025-02-06 18:31:19,804 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 179 flow [2025-02-06 18:31:19,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2025-02-06 18:31:19,804 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2025-02-06 18:31:19,805 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 179 flow [2025-02-06 18:31:19,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:19,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:19,805 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:19,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:31:19,805 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:19,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:19,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1363632621, now seen corresponding path program 1 times [2025-02-06 18:31:19,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:19,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455861204] [2025-02-06 18:31:19,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:19,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:19,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:19,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:19,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455861204] [2025-02-06 18:31:19,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455861204] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:31:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767898200] [2025-02-06 18:31:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:19,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:19,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:19,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:31:19,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:19,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:19,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:19,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:19,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:21,036 INFO L124 PetriNetUnfolderBase]: 18402/26092 cut-off events. [2025-02-06 18:31:21,036 INFO L125 PetriNetUnfolderBase]: For 11185/11188 co-relation queries the response was YES. [2025-02-06 18:31:21,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60875 conditions, 26092 events. 18402/26092 cut-off events. For 11185/11188 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 143641 event pairs, 1727 based on Foata normal form. 223/26306 useless extension candidates. Maximal degree in co-relation 39274. Up to 15291 conditions per place. [2025-02-06 18:31:21,117 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 71 selfloop transitions, 5 changer transitions 42/120 dead transitions. [2025-02-06 18:31:21,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 120 transitions, 577 flow [2025-02-06 18:31:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2025-02-06 18:31:21,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.413265306122449 [2025-02-06 18:31:21,119 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 179 flow. Second operand 7 states and 162 transitions. [2025-02-06 18:31:21,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 120 transitions, 577 flow [2025-02-06 18:31:21,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 545 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-02-06 18:31:21,256 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 157 flow [2025-02-06 18:31:21,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2025-02-06 18:31:21,258 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2025-02-06 18:31:21,259 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 157 flow [2025-02-06 18:31:21,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:21,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:21,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:21,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:31:21,260 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:21,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1220495968, now seen corresponding path program 1 times [2025-02-06 18:31:21,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:21,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157087774] [2025-02-06 18:31:21,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:21,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:31:21,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:31:21,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:21,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:21,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157087774] [2025-02-06 18:31:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157087774] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:21,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:21,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:31:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357370783] [2025-02-06 18:31:21,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:21,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:21,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:21,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:21,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:31:21,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:21,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:21,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:21,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:21,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:22,092 INFO L124 PetriNetUnfolderBase]: 15112/21311 cut-off events. [2025-02-06 18:31:22,092 INFO L125 PetriNetUnfolderBase]: For 9161/9164 co-relation queries the response was YES. [2025-02-06 18:31:22,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49271 conditions, 21311 events. 15112/21311 cut-off events. For 9161/9164 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 112086 event pairs, 756 based on Foata normal form. 119/21421 useless extension candidates. Maximal degree in co-relation 48341. Up to 8471 conditions per place. [2025-02-06 18:31:22,165 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 77 selfloop transitions, 6 changer transitions 32/117 dead transitions. [2025-02-06 18:31:22,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 538 flow [2025-02-06 18:31:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:22,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2025-02-06 18:31:22,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4030612244897959 [2025-02-06 18:31:22,166 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 157 flow. Second operand 7 states and 158 transitions. [2025-02-06 18:31:22,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 538 flow [2025-02-06 18:31:22,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 117 transitions, 518 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:31:22,185 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 128 flow [2025-02-06 18:31:22,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2025-02-06 18:31:22,186 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2025-02-06 18:31:22,186 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 128 flow [2025-02-06 18:31:22,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:22,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:22,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:22,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:31:22,186 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-02-06 18:31:22,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1220509842, now seen corresponding path program 1 times [2025-02-06 18:31:22,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:22,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209723383] [2025-02-06 18:31:22,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:22,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:31:22,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:31:22,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:22,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:22,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:22,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209723383] [2025-02-06 18:31:22,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209723383] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:22,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:22,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:31:22,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754327225] [2025-02-06 18:31:22,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:22,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:22,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:22,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:22,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:31:22,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-02-06 18:31:22,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:22,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:22,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-02-06 18:31:22,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:22,793 INFO L124 PetriNetUnfolderBase]: 12176/17184 cut-off events. [2025-02-06 18:31:22,793 INFO L125 PetriNetUnfolderBase]: For 5587/5590 co-relation queries the response was YES. [2025-02-06 18:31:22,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39034 conditions, 17184 events. 12176/17184 cut-off events. For 5587/5590 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 88410 event pairs, 701 based on Foata normal form. 113/17288 useless extension candidates. Maximal degree in co-relation 6428. Up to 7308 conditions per place. [2025-02-06 18:31:22,837 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2025-02-06 18:31:22,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 437 flow [2025-02-06 18:31:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2025-02-06 18:31:22,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3520408163265306 [2025-02-06 18:31:22,838 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 128 flow. Second operand 7 states and 138 transitions. [2025-02-06 18:31:22,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 437 flow [2025-02-06 18:31:22,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 97 transitions, 415 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-06 18:31:22,844 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2025-02-06 18:31:22,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2025-02-06 18:31:22,845 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2025-02-06 18:31:22,845 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2025-02-06 18:31:22,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-02-06 18:31:22,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-02-06 18:31:22,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-02-06 18:31:22,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-02-06 18:31:22,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:31:22,848 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:22,852 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 18:31:22,852 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 18:31:22,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:31:22 BasicIcfg [2025-02-06 18:31:22,856 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 18:31:22,856 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:31:22,856 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:31:22,856 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:31:22,857 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:02" (3/4) ... [2025-02-06 18:31:22,858 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 18:31:22,860 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure reader [2025-02-06 18:31:22,860 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure writer [2025-02-06 18:31:22,862 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2025-02-06 18:31:22,862 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-06 18:31:22,863 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-06 18:31:22,863 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 18:31:22,938 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 18:31:22,939 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 18:31:22,939 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:31:22,940 INFO L158 Benchmark]: Toolchain (without parser) took 20734.54ms. Allocated memory was 167.8MB in the beginning and 9.9GB in the end (delta: 9.7GB). Free memory was 133.8MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2025-02-06 18:31:22,940 INFO L158 Benchmark]: CDTParser took 1.09ms. Allocated memory is still 201.3MB. Free memory was 125.0MB in the beginning and 124.7MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:31:22,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.32ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 114.1MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 18:31:22,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.16ms. Allocated memory is still 167.8MB. Free memory was 114.1MB in the beginning and 112.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:31:22,941 INFO L158 Benchmark]: Boogie Preprocessor took 32.07ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:31:22,941 INFO L158 Benchmark]: IcfgBuilder took 409.34ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 88.9MB in the end (delta: 22.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 18:31:22,942 INFO L158 Benchmark]: TraceAbstraction took 19893.28ms. Allocated memory was 167.8MB in the beginning and 9.9GB in the end (delta: 9.7GB). Free memory was 88.5MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2025-02-06 18:31:22,942 INFO L158 Benchmark]: Witness Printer took 82.50ms. Allocated memory is still 9.9GB. Free memory was 7.6GB in the beginning and 7.6GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:31:22,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09ms. Allocated memory is still 201.3MB. Free memory was 125.0MB in the beginning and 124.7MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.32ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 114.1MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.16ms. Allocated memory is still 167.8MB. Free memory was 114.1MB in the beginning and 112.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.07ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 409.34ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 88.9MB in the end (delta: 22.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19893.28ms. Allocated memory was 167.8MB in the beginning and 9.9GB in the end (delta: 9.7GB). Free memory was 88.5MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Witness Printer took 82.50ms. Allocated memory is still 9.9GB. Free memory was 7.6GB in the beginning and 7.6GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 82 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 770 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 770 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2036 IncrementalHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 0 mSDtfsCounter, 2036 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=312occurred in iteration=4, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 18:31:22,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE