./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:20:33,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:20:33,176 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:20:33,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:20:33,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:20:33,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:20:33,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:20:33,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:20:33,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:20:33,205 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:20:33,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:20:33,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:20:33,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:20:33,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:20:33,206 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:20:33,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:20:33,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:20:33,207 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:20:33,208 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:20:33,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:20:33,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:20:33,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:20:33,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:20:33,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:20:33,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:20:33,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:20:33,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:20:33,209 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2025-03-04 15:20:33,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:20:33,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:20:33,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:20:33,445 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:20:33,445 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:20:33,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2025-03-04 15:20:34,548 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7dff6b88/a7a14351abf34305a2ad4a08a9c793d4/FLAGd840e0347 [2025-03-04 15:20:34,838 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:20:34,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2025-03-04 15:20:34,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7dff6b88/a7a14351abf34305a2ad4a08a9c793d4/FLAGd840e0347 [2025-03-04 15:20:35,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7dff6b88/a7a14351abf34305a2ad4a08a9c793d4 [2025-03-04 15:20:35,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:20:35,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:20:35,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:20:35,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:20:35,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:20:35,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a4544d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35, skipping insertion in model container [2025-03-04 15:20:35,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:20:35,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:20:35,349 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:20:35,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:20:35,409 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:20:35,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35 WrapperNode [2025-03-04 15:20:35,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:20:35,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:20:35,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:20:35,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:20:35,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,435 INFO L138 Inliner]: procedures = 163, calls = 55, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 117 [2025-03-04 15:20:35,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:20:35,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:20:35,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:20:35,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:20:35,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,454 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2025-03-04 15:20:35,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,460 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:20:35,465 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:20:35,465 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:20:35,465 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:20:35,466 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (1/1) ... [2025-03-04 15:20:35,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:20:35,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:35,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:20:35,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-03-04 15:20:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 15:20:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:20:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:20:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:20:35,508 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:20:35,592 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:20:35,593 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:20:35,798 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:20:35,798 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:20:35,927 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:20:35,927 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:20:35,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:20:35 BoogieIcfgContainer [2025-03-04 15:20:35,927 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:20:35,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:20:35,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:20:35,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:20:35,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:20:35" (1/3) ... [2025-03-04 15:20:35,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18194009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:20:35, skipping insertion in model container [2025-03-04 15:20:35,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:35" (2/3) ... [2025-03-04 15:20:35,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18194009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:20:35, skipping insertion in model container [2025-03-04 15:20:35,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:20:35" (3/3) ... [2025-03-04 15:20:35,935 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2025-03-04 15:20:35,947 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:20:35,948 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_27-multiple-protecting2_true.i that has 3 procedures, 77 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-03-04 15:20:35,948 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:20:36,005 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:20:36,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 166 flow [2025-03-04 15:20:36,063 INFO L124 PetriNetUnfolderBase]: 0/74 cut-off events. [2025-03-04 15:20:36,065 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:20:36,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 0/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 144 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-04 15:20:36,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 76 transitions, 166 flow [2025-03-04 15:20:36,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 72 transitions, 153 flow [2025-03-04 15:20:36,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:20:36,084 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;@7d34f581, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:20:36,084 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-04 15:20:36,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:20:36,089 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-04 15:20:36,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:20:36,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:36,090 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:36,090 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-04 15:20:36,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:36,094 INFO L85 PathProgramCache]: Analyzing trace with hash 527846758, now seen corresponding path program 1 times [2025-03-04 15:20:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160225033] [2025-03-04 15:20:36,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:36,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:20:36,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:20:36,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:36,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160225033] [2025-03-04 15:20:36,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160225033] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:36,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:36,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:20:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341907536] [2025-03-04 15:20:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:36,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:20:36,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:36,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:20:36,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:20:36,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2025-03-04 15:20:36,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-03-04 15:20:36,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:36,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2025-03-04 15:20:36,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:37,576 INFO L124 PetriNetUnfolderBase]: 6965/13395 cut-off events. [2025-03-04 15:20:37,576 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-03-04 15:20:37,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24399 conditions, 13395 events. 6965/13395 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 109472 event pairs, 2238 based on Foata normal form. 218/13267 useless extension candidates. Maximal degree in co-relation 24273. Up to 5449 conditions per place. [2025-03-04 15:20:37,654 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 105 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2025-03-04 15:20:37,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 138 transitions, 518 flow [2025-03-04 15:20:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:20:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:20:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2025-03-04 15:20:37,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2025-03-04 15:20:37,666 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 153 flow. Second operand 4 states and 226 transitions. [2025-03-04 15:20:37,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 138 transitions, 518 flow [2025-03-04 15:20:37,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 138 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:37,681 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 186 flow [2025-03-04 15:20:37,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2025-03-04 15:20:37,685 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2025-03-04 15:20:37,685 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 186 flow [2025-03-04 15:20:37,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-03-04 15:20:37,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:37,685 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:37,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:20:37,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-04 15:20:37,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash 487194490, now seen corresponding path program 1 times [2025-03-04 15:20:37,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:37,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182813050] [2025-03-04 15:20:37,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:37,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:20:37,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:20:37,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:37,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:37,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:37,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182813050] [2025-03-04 15:20:37,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182813050] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:37,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:37,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:20:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367235412] [2025-03-04 15:20:37,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:37,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:20:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:37,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:20:37,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:20:37,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2025-03-04 15:20:37,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2025-03-04 15:20:37,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:37,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2025-03-04 15:20:37,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:38,784 INFO L124 PetriNetUnfolderBase]: 8807/17156 cut-off events. [2025-03-04 15:20:38,785 INFO L125 PetriNetUnfolderBase]: For 3116/3116 co-relation queries the response was YES. [2025-03-04 15:20:38,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33795 conditions, 17156 events. 8807/17156 cut-off events. For 3116/3116 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 146863 event pairs, 2309 based on Foata normal form. 330/17102 useless extension candidates. Maximal degree in co-relation 30142. Up to 7471 conditions per place. [2025-03-04 15:20:38,868 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 116 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2025-03-04 15:20:38,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 632 flow [2025-03-04 15:20:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:20:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:20:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2025-03-04 15:20:38,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7335526315789473 [2025-03-04 15:20:38,872 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 186 flow. Second operand 4 states and 223 transitions. [2025-03-04 15:20:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 632 flow [2025-03-04 15:20:38,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 145 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:38,878 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 206 flow [2025-03-04 15:20:38,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2025-03-04 15:20:38,878 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2025-03-04 15:20:38,879 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 206 flow [2025-03-04 15:20:38,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2025-03-04 15:20:38,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:38,879 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:38,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:20:38,879 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-04 15:20:38,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1203293271, now seen corresponding path program 1 times [2025-03-04 15:20:38,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:38,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756354410] [2025-03-04 15:20:38,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:38,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:38,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:20:38,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:20:38,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:38,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756354410] [2025-03-04 15:20:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756354410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:39,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:39,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:20:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684936755] [2025-03-04 15:20:39,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:39,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:20:39,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:39,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:20:39,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:20:39,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-03-04 15:20:39,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-03-04 15:20:39,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:39,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-03-04 15:20:39,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:40,163 INFO L124 PetriNetUnfolderBase]: 7460/14039 cut-off events. [2025-03-04 15:20:40,164 INFO L125 PetriNetUnfolderBase]: For 4143/4143 co-relation queries the response was YES. [2025-03-04 15:20:40,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29263 conditions, 14039 events. 7460/14039 cut-off events. For 4143/4143 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 113107 event pairs, 1978 based on Foata normal form. 494/14450 useless extension candidates. Maximal degree in co-relation 25414. Up to 4567 conditions per place. [2025-03-04 15:20:40,201 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 160 selfloop transitions, 8 changer transitions 5/195 dead transitions. [2025-03-04 15:20:40,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 195 transitions, 877 flow [2025-03-04 15:20:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:20:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:20:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2025-03-04 15:20:40,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7149122807017544 [2025-03-04 15:20:40,203 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 206 flow. Second operand 6 states and 326 transitions. [2025-03-04 15:20:40,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 195 transitions, 877 flow [2025-03-04 15:20:40,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 195 transitions, 860 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:40,208 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 205 flow [2025-03-04 15:20:40,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2025-03-04 15:20:40,209 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2025-03-04 15:20:40,209 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 205 flow [2025-03-04 15:20:40,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-03-04 15:20:40,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:40,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:40,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:20:40,209 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-04 15:20:40,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1352614735, now seen corresponding path program 1 times [2025-03-04 15:20:40,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087772142] [2025-03-04 15:20:40,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:40,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:20:40,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:20:40,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:40,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:40,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087772142] [2025-03-04 15:20:40,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087772142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:40,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:40,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:20:40,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482675321] [2025-03-04 15:20:40,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:40,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:20:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:40,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:20:40,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:20:40,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-03-04 15:20:40,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-03-04 15:20:40,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:40,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-03-04 15:20:40,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:41,081 INFO L124 PetriNetUnfolderBase]: 7003/13308 cut-off events. [2025-03-04 15:20:41,082 INFO L125 PetriNetUnfolderBase]: For 3923/3923 co-relation queries the response was YES. [2025-03-04 15:20:41,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28242 conditions, 13308 events. 7003/13308 cut-off events. For 3923/3923 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 106974 event pairs, 1978 based on Foata normal form. 274/13499 useless extension candidates. Maximal degree in co-relation 24432. Up to 5155 conditions per place. [2025-03-04 15:20:41,113 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 115 selfloop transitions, 8 changer transitions 21/165 dead transitions. [2025-03-04 15:20:41,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 165 transitions, 738 flow [2025-03-04 15:20:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:20:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:20:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2025-03-04 15:20:41,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2025-03-04 15:20:41,114 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 205 flow. Second operand 6 states and 292 transitions. [2025-03-04 15:20:41,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 165 transitions, 738 flow [2025-03-04 15:20:41,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 165 transitions, 717 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 15:20:41,121 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 180 flow [2025-03-04 15:20:41,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2025-03-04 15:20:41,121 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2025-03-04 15:20:41,122 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 180 flow [2025-03-04 15:20:41,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-03-04 15:20:41,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:41,122 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:41,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:20:41,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-04 15:20:41,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 230848221, now seen corresponding path program 1 times [2025-03-04 15:20:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803406584] [2025-03-04 15:20:41,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:41,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:41,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:20:41,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:20:41,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:41,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:41,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:41,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803406584] [2025-03-04 15:20:41,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803406584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:41,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:41,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:20:41,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831089858] [2025-03-04 15:20:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:41,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:20:41,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:41,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:20:41,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:20:41,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-03-04 15:20:41,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2025-03-04 15:20:41,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:41,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-03-04 15:20:41,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:41,734 INFO L124 PetriNetUnfolderBase]: 4043/7774 cut-off events. [2025-03-04 15:20:41,734 INFO L125 PetriNetUnfolderBase]: For 2134/2134 co-relation queries the response was YES. [2025-03-04 15:20:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16171 conditions, 7774 events. 4043/7774 cut-off events. For 2134/2134 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 58748 event pairs, 1183 based on Foata normal form. 354/8114 useless extension candidates. Maximal degree in co-relation 13910. Up to 2232 conditions per place. [2025-03-04 15:20:41,762 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 134 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2025-03-04 15:20:41,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 157 transitions, 725 flow [2025-03-04 15:20:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:20:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:20:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2025-03-04 15:20:41,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-04 15:20:41,763 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 180 flow. Second operand 6 states and 285 transitions. [2025-03-04 15:20:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 157 transitions, 725 flow [2025-03-04 15:20:41,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 157 transitions, 685 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-04 15:20:41,767 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 164 flow [2025-03-04 15:20:41,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2025-03-04 15:20:41,768 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2025-03-04 15:20:41,768 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 164 flow [2025-03-04 15:20:41,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2025-03-04 15:20:41,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:41,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:41,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:20:41,769 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-04 15:20:41,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1433639290, now seen corresponding path program 1 times [2025-03-04 15:20:41,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:41,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605162295] [2025-03-04 15:20:41,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:41,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:41,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:20:41,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:20:41,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:41,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605162295] [2025-03-04 15:20:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605162295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:41,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:41,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:20:41,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054311947] [2025-03-04 15:20:41,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:41,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:20:41,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:41,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:20:41,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:20:41,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-03-04 15:20:41,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2025-03-04 15:20:41,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:41,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-03-04 15:20:41,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:42,231 INFO L124 PetriNetUnfolderBase]: 3573/7030 cut-off events. [2025-03-04 15:20:42,232 INFO L125 PetriNetUnfolderBase]: For 1734/1734 co-relation queries the response was YES. [2025-03-04 15:20:42,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14432 conditions, 7030 events. 3573/7030 cut-off events. For 1734/1734 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 53224 event pairs, 1183 based on Foata normal form. 274/7290 useless extension candidates. Maximal degree in co-relation 12356. Up to 2232 conditions per place. [2025-03-04 15:20:42,242 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 0 selfloop transitions, 0 changer transitions 156/156 dead transitions. [2025-03-04 15:20:42,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 156 transitions, 689 flow [2025-03-04 15:20:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:20:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:20:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2025-03-04 15:20:42,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2025-03-04 15:20:42,243 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 164 flow. Second operand 6 states and 282 transitions. [2025-03-04 15:20:42,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 156 transitions, 689 flow [2025-03-04 15:20:42,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 156 transitions, 682 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:42,247 INFO L231 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2025-03-04 15:20:42,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2025-03-04 15:20:42,247 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2025-03-04 15:20:42,247 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2025-03-04 15:20:42,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2025-03-04 15:20:42,249 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2025-03-04 15:20:42,249 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-03-04 15:20:42,250 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-03-04 15:20:42,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:20:42,250 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-03-04 15:20:42,253 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:20:42,253 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:20:42,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:20:42 BasicIcfg [2025-03-04 15:20:42,257 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:20:42,257 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:20:42,257 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:20:42,257 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:20:42,258 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:20:35" (3/4) ... [2025-03-04 15:20:42,258 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:20:42,260 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2_fun [2025-03-04 15:20:42,260 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-04 15:20:42,262 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2025-03-04 15:20:42,262 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-04 15:20:42,262 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 15:20:42,262 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 15:20:42,310 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:20:42,310 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:20:42,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:20:42,311 INFO L158 Benchmark]: Toolchain (without parser) took 7181.02ms. Allocated memory was 142.6MB in the beginning and 855.6MB in the end (delta: 713.0MB). Free memory was 111.3MB in the beginning and 369.8MB in the end (delta: -258.5MB). Peak memory consumption was 454.9MB. Max. memory is 16.1GB. [2025-03-04 15:20:42,311 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:20:42,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.05ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 91.4MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 15:20:42,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.78ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 89.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:20:42,311 INFO L158 Benchmark]: Boogie Preprocessor took 27.84ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 87.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:20:42,312 INFO L158 Benchmark]: IcfgBuilder took 462.38ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 45.0MB in the end (delta: 42.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-04 15:20:42,312 INFO L158 Benchmark]: TraceAbstraction took 6327.06ms. Allocated memory was 142.6MB in the beginning and 855.6MB in the end (delta: 713.0MB). Free memory was 44.0MB in the beginning and 374.1MB in the end (delta: -330.1MB). Peak memory consumption was 379.4MB. Max. memory is 16.1GB. [2025-03-04 15:20:42,312 INFO L158 Benchmark]: Witness Printer took 53.34ms. Allocated memory is still 855.6MB. Free memory was 374.1MB in the beginning and 369.8MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:20:42,313 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.05ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 91.4MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.78ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 89.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.84ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 87.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 462.38ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 45.0MB in the end (delta: 42.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6327.06ms. Allocated memory was 142.6MB in the beginning and 855.6MB in the end (delta: 713.0MB). Free memory was 44.0MB in the beginning and 374.1MB in the end (delta: -330.1MB). Peak memory consumption was 379.4MB. Max. memory is 16.1GB. * Witness Printer took 53.34ms. Allocated memory is still 855.6MB. Free memory was 374.1MB in the beginning and 369.8MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: 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 5 procedures, 123 locations, 18 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: 6.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 782 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 746 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1944 IncrementalHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 9 mSDtfsCounter, 1944 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=2, InterpolantAutomatonStates: 32, 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, 0.5s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:20:42,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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