./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/butterfly.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/butterfly.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09af681f1eafc093cc175698e1c11da4bfd74a552772eb695e0956765376568c --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:30:59,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:30:59,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:30:59,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:30:59,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:30:59,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:30:59,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:30:59,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:30:59,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:30:59,132 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:30:59,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:30:59,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:30:59,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:30:59,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:30:59,133 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:30:59,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:30:59,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:30:59,133 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:30:59,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:30:59,134 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:30:59,134 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:30:59,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:30:59,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:30:59,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:30:59,136 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09af681f1eafc093cc175698e1c11da4bfd74a552772eb695e0956765376568c [2025-01-10 06:30:59,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:30:59,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:30:59,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:30:59,318 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:30:59,318 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:30:59,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/butterfly.i [2025-01-10 06:31:00,495 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f17387869/9faf92758cac43c782d3fbb09bd0a5ba/FLAG92e237c5d [2025-01-10 06:31:00,769 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:31:00,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/butterfly.i [2025-01-10 06:31:00,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f17387869/9faf92758cac43c782d3fbb09bd0a5ba/FLAG92e237c5d [2025-01-10 06:31:00,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f17387869/9faf92758cac43c782d3fbb09bd0a5ba [2025-01-10 06:31:00,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:31:00,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:31:00,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:31:00,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:31:00,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:31:00,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:00" (1/1) ... [2025-01-10 06:31:00,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcac6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:00, skipping insertion in model container [2025-01-10 06:31:00,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:00" (1/1) ... [2025-01-10 06:31:00,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:31:01,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:31:01,162 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:31:01,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:31:01,229 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:31:01,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01 WrapperNode [2025-01-10 06:31:01,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:31:01,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:31:01,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:31:01,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:31:01,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,266 INFO L138 Inliner]: procedures = 171, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2025-01-10 06:31:01,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:31:01,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:31:01,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:31:01,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:31:01,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,282 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 06:31:01,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,286 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:31:01,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:31:01,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:31:01,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:31:01,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (1/1) ... [2025-01-10 06:31:01,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:31:01,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:31:01,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:31:01,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:31:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:31:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure p0 [2025-01-10 06:31:01,349 INFO L138 BoogieDeclarations]: Found implementation of procedure p0 [2025-01-10 06:31:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure p1 [2025-01-10 06:31:01,349 INFO L138 BoogieDeclarations]: Found implementation of procedure p1 [2025-01-10 06:31:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure p2 [2025-01-10 06:31:01,349 INFO L138 BoogieDeclarations]: Found implementation of procedure p2 [2025-01-10 06:31:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure p3 [2025-01-10 06:31:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure p3 [2025-01-10 06:31:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure p4 [2025-01-10 06:31:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure p4 [2025-01-10 06:31:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure p5 [2025-01-10 06:31:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure p5 [2025-01-10 06:31:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:31:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:31:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:31:01,351 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:31:01,452 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:31:01,454 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:31:01,607 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:31:01,607 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:31:01,707 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:31:01,707 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:31:01,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:01 BoogieIcfgContainer [2025-01-10 06:31:01,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:31:01,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:31:01,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:31:01,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:31:01,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:31:00" (1/3) ... [2025-01-10 06:31:01,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d74058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:01, skipping insertion in model container [2025-01-10 06:31:01,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:01" (2/3) ... [2025-01-10 06:31:01,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d74058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:01, skipping insertion in model container [2025-01-10 06:31:01,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:01" (3/3) ... [2025-01-10 06:31:01,716 INFO L128 eAbstractionObserver]: Analyzing ICFG butterfly.i [2025-01-10 06:31:01,726 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:31:01,727 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG butterfly.i that has 7 procedures, 85 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-01-10 06:31:01,727 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:31:01,808 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-01-10 06:31:01,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 90 transitions, 222 flow [2025-01-10 06:31:01,879 INFO L124 PetriNetUnfolderBase]: 6/84 cut-off events. [2025-01-10 06:31:01,884 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 06:31:01,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 84 events. 6/84 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2025-01-10 06:31:01,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 90 transitions, 222 flow [2025-01-10 06:31:01,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 82 transitions, 197 flow [2025-01-10 06:31:01,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:31:01,910 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;@4cf0392, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:31:01,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-01-10 06:31:01,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:31:01,918 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-01-10 06:31:01,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:31:01,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:31:01,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:31:01,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting p0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [p0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, p0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, p1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, p1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:31:01,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:31:01,923 INFO L85 PathProgramCache]: Analyzing trace with hash -513960056, now seen corresponding path program 1 times [2025-01-10 06:31:01,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:31:01,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236030239] [2025-01-10 06:31:01,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:31:01,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:31:01,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:31:02,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:31:02,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:31:02,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:31:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:31:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:31:02,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236030239] [2025-01-10 06:31:02,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236030239] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:31:02,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:31:02,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:31:02,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367459572] [2025-01-10 06:31:02,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:31:02,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:31:02,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:31:02,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:31:02,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:31:02,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 90 [2025-01-10 06:31:02,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2025-01-10 06:31:02,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:31:02,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 90 [2025-01-10 06:31:02,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:31:17,208 INFO L124 PetriNetUnfolderBase]: 189136/270002 cut-off events. [2025-01-10 06:31:17,209 INFO L125 PetriNetUnfolderBase]: For 23292/23292 co-relation queries the response was YES. [2025-01-10 06:31:18,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518392 conditions, 270002 events. 189136/270002 cut-off events. For 23292/23292 co-relation queries the response was YES. Maximal size of possible extension queue 15596. Compared 2313520 event pairs, 97178 based on Foata normal form. 5312/165149 useless extension candidates. Maximal degree in co-relation 459143. Up to 195878 conditions per place. [2025-01-10 06:31:19,423 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 112 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2025-01-10 06:31:19,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 158 transitions, 639 flow [2025-01-10 06:31:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:31:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:31:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2025-01-10 06:31:19,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2025-01-10 06:31:19,438 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 197 flow. Second operand 5 states and 350 transitions. [2025-01-10 06:31:19,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 158 transitions, 639 flow [2025-01-10 06:31:19,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 158 transitions, 585 flow, removed 0 selfloop flow, removed 11 redundant places. [2025-01-10 06:31:19,672 INFO L231 Difference]: Finished difference. Result has 91 places, 87 transitions, 221 flow [2025-01-10 06:31:19,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=91, PETRI_TRANSITIONS=87} [2025-01-10 06:31:19,676 INFO L279 CegarLoopForPetriNet]: 95 programPoint places, -4 predicate places. [2025-01-10 06:31:19,676 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 87 transitions, 221 flow [2025-01-10 06:31:19,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2025-01-10 06:31:19,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:31:19,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:31:19,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:31:19,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting p1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [p0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, p0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, p1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, p1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:31:19,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:31:19,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1219263243, now seen corresponding path program 1 times [2025-01-10 06:31:19,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:31:19,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366487585] [2025-01-10 06:31:19,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:31:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:31:19,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:31:19,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:31:19,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:31:19,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:31:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:31:19,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:31:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366487585] [2025-01-10 06:31:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366487585] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:31:19,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:31:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:31:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670092978] [2025-01-10 06:31:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:31:19,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:31:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:31:19,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:31:19,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:31:19,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 90 [2025-01-10 06:31:19,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 87 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2025-01-10 06:31:19,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:31:19,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 90 [2025-01-10 06:31:19,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand