./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 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 ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_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 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:19:11,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:19:11,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-30 10:19:11,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:19:11,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:19:11,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:19:11,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:19:11,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:19:11,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:19:11,418 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:19:11,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:19:11,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:19:11,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:19:11,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:19:11,419 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:19:11,420 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:11,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:19:11,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:11,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:19:11,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:19:11,421 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 -> 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d [2025-04-30 10:19:11,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:19:11,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:19:11,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:19:11,640 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:19:11,640 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:19:11,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2025-04-30 10:19:12,869 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d2aaeab/0741f3d899f54018bacb146428e9e6a8/FLAG4bf26b158 [2025-04-30 10:19:13,118 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:19:13,119 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2025-04-30 10:19:13,128 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d2aaeab/0741f3d899f54018bacb146428e9e6a8/FLAG4bf26b158 [2025-04-30 10:19:13,871 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d2aaeab/0741f3d899f54018bacb146428e9e6a8 [2025-04-30 10:19:13,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:19:13,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:19:13,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:19:13,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:19:13,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:19:13,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:19:13" (1/1) ... [2025-04-30 10:19:13,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37354c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:13, skipping insertion in model container [2025-04-30 10:19:13,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:19:13" (1/1) ... [2025-04-30 10:19:13,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:19:14,174 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:19:14,186 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:19:14,244 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:19:14,268 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:19:14,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14 WrapperNode [2025-04-30 10:19:14,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:19:14,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:19:14,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:19:14,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:19:14,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,299 INFO L138 Inliner]: procedures = 162, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-04-30 10:19:14,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:19:14,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:19:14,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:19:14,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:19:14,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,317 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-04-30 10:19:14,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,320 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:19:14,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:19:14,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:19:14,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:19:14,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:14,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:14,355 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) [2025-04-30 10:19:14,357 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 [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2025-04-30 10:19:14,373 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-30 10:19:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:19:14,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:19:14,374 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-30 10:19:14,462 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:19:14,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:19:14,569 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:19:14,569 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:19:14,675 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:19:14,675 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-30 10:19:14,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:19:14 BoogieIcfgContainer [2025-04-30 10:19:14,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:19:14,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:19:14,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:19:14,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:19:14,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:19:13" (1/3) ... [2025-04-30 10:19:14,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfe3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:19:14, skipping insertion in model container [2025-04-30 10:19:14,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (2/3) ... [2025-04-30 10:19:14,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfe3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:19:14, skipping insertion in model container [2025-04-30 10:19:14,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:19:14" (3/3) ... [2025-04-30 10:19:14,685 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2025-04-30 10:19:14,695 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:19:14,696 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_52-refine-protected-loop2-small_true.i that has 2 procedures, 19 locations, 19 edges, 1 initial locations, 1 loop locations, and 2 error locations. [2025-04-30 10:19:14,697 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:19:14,723 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-30 10:19:14,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 20 transitions, 44 flow [2025-04-30 10:19:14,769 INFO L116 PetriNetUnfolderBase]: 2/19 cut-off events. [2025-04-30 10:19:14,772 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:14,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 19 events. 2/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2025-04-30 10:19:14,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 20 transitions, 44 flow [2025-04-30 10:19:14,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 18 transitions, 39 flow [2025-04-30 10:19:14,781 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:19:14,792 INFO L340 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;@4ace4260, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:19:14,793 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-30 10:19:14,798 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:19:14,798 INFO L116 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-04-30 10:19:14,798 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:14,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:14,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:14,800 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-04-30 10:19:14,804 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1258109601, now seen corresponding path program 1 times [2025-04-30 10:19:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:14,810 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685443970] [2025-04-30 10:19:14,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:14,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-30 10:19:14,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-30 10:19:14,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:14,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:15,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:15,052 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685443970] [2025-04-30 10:19:15,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685443970] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:15,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:15,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:15,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081396220] [2025-04-30 10:19:15,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:15,058 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:19:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:15,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:19:15,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:19:15,099 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-04-30 10:19:15,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 39 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2025-04-30 10:19:15,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:15,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-04-30 10:19:15,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:15,159 INFO L116 PetriNetUnfolderBase]: 9/34 cut-off events. [2025-04-30 10:19:15,160 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:15,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 34 events. 9/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 29 event pairs, 5 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 55. Up to 20 conditions per place. [2025-04-30 10:19:15,161 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2025-04-30 10:19:15,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 61 flow [2025-04-30 10:19:15,162 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:19:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-30 10:19:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2025-04-30 10:19:15,173 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-04-30 10:19:15,175 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 39 flow. Second operand 4 states and 39 transitions. [2025-04-30 10:19:15,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 61 flow [2025-04-30 10:19:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:19:15,180 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2025-04-30 10:19:15,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2025-04-30 10:19:15,185 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2025-04-30 10:19:15,186 INFO L485 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2025-04-30 10:19:15,186 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2025-04-30 10:19:15,188 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-30 10:19:15,189 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2025-04-30 10:19:15,190 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2025-04-30 10:19:15,191 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2025-04-30 10:19:15,191 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2025-04-30 10:19:15,191 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:19:15,191 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-30 10:19:15,196 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-30 10:19:15,196 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:19:15,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:19:15 BasicIcfg [2025-04-30 10:19:15,203 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:19:15,204 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:19:15,204 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:19:15,204 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:19:15,204 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:19:14" (3/4) ... [2025-04-30 10:19:15,205 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-30 10:19:15,207 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2025-04-30 10:19:15,209 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2025-04-30 10:19:15,209 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-04-30 10:19:15,209 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-30 10:19:15,209 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-30 10:19:15,259 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:19:15,259 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:19:15,259 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:19:15,260 INFO L158 Benchmark]: Toolchain (without parser) took 1385.28ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 89.3MB in the end (delta: 20.4MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2025-04-30 10:19:15,260 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:19:15,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.51ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 86.4MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:19:15,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.95ms. Allocated memory is still 142.6MB. Free memory was 86.4MB in the beginning and 85.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:19:15,261 INFO L158 Benchmark]: Boogie Preprocessor took 26.34ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:19:15,261 INFO L158 Benchmark]: RCFGBuilder took 348.29ms. Allocated memory is still 142.6MB. Free memory was 83.0MB in the beginning and 59.0MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:19:15,261 INFO L158 Benchmark]: TraceAbstraction took 526.16ms. Allocated memory is still 142.6MB. Free memory was 57.8MB in the beginning and 94.5MB in the end (delta: -36.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:19:15,261 INFO L158 Benchmark]: Witness Printer took 55.90ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 89.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:19:15,262 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.51ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 86.4MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.95ms. Allocated memory is still 142.6MB. Free memory was 86.4MB in the beginning and 85.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.34ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.29ms. Allocated memory is still 142.6MB. Free memory was 83.0MB in the beginning and 59.0MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 526.16ms. Allocated memory is still 142.6MB. Free memory was 57.8MB in the beginning and 94.5MB in the end (delta: -36.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.90ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 89.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 3 procedures, 35 locations, 37 edges, 5 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 3 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-30 10:19:15,274 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