./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-wmm/mix017.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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-wmm/mix017.oepc.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 a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 13:56:46,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 13:56:46,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 13:56:46,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 13:56:46,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 13:56:46,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 13:56:46,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 13:56:46,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 13:56:46,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 13:56:46,248 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 13:56:46,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 13:56:46,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 13:56:46,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 13:56:46,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 13:56:46,249 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 13:56:46,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 13:56:46,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 13:56:46,249 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 13:56:46,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 13:56:46,250 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 13:56:46,251 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 13:56:46,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 13:56:46,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 13:56:46,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 13:56:46,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 13:56:46,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:56:46,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 13:56:46,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 13:56:46,251 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 13:56:46,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 13:56:46,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 13:56:46,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 13:56:46,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 13:56:46,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 13:56:46,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 13:56:46,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 13:56:46,252 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 -> a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 [2025-02-08 13:56:46,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 13:56:46,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 13:56:46,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 13:56:46,481 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 13:56:46,481 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 13:56:46,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix017.oepc.i [2025-02-08 13:56:47,713 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94870077b/a34b444d1fb64f5c8dc79e7ec0b6ca8b/FLAG30ab9c5ae [2025-02-08 13:56:48,149 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 13:56:48,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix017.oepc.i [2025-02-08 13:56:48,169 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94870077b/a34b444d1fb64f5c8dc79e7ec0b6ca8b/FLAG30ab9c5ae [2025-02-08 13:56:48,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94870077b/a34b444d1fb64f5c8dc79e7ec0b6ca8b [2025-02-08 13:56:48,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 13:56:48,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 13:56:48,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 13:56:48,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 13:56:48,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 13:56:48,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77973e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48, skipping insertion in model container [2025-02-08 13:56:48,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 13:56:48,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:56:48,433 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 13:56:48,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:56:48,510 INFO L204 MainTranslator]: Completed translation [2025-02-08 13:56:48,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48 WrapperNode [2025-02-08 13:56:48,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 13:56:48,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 13:56:48,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 13:56:48,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 13:56:48,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,546 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 135 [2025-02-08 13:56:48,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 13:56:48,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 13:56:48,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 13:56:48,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 13:56:48,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,577 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 13:56:48,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,582 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 13:56:48,588 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 13:56:48,588 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 13:56:48,588 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 13:56:48,589 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (1/1) ... [2025-02-08 13:56:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:56:48,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:56:48,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 13:56:48,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 13:56:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 13:56:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 13:56:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 13:56:48,642 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 13:56:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 13:56:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 13:56:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 13:56:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 13:56:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 13:56:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 13:56:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 13:56:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 13:56:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 13:56:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 13:56:48,645 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 13:56:48,772 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 13:56:48,774 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 13:56:49,039 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 13:56:49,039 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 13:56:49,240 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 13:56:49,240 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 13:56:49,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:56:49 BoogieIcfgContainer [2025-02-08 13:56:49,240 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 13:56:49,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 13:56:49,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 13:56:49,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 13:56:49,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:56:48" (1/3) ... [2025-02-08 13:56:49,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1b9b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:56:49, skipping insertion in model container [2025-02-08 13:56:49,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:56:48" (2/3) ... [2025-02-08 13:56:49,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1b9b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:56:49, skipping insertion in model container [2025-02-08 13:56:49,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:56:49" (3/3) ... [2025-02-08 13:56:49,249 INFO L128 eAbstractionObserver]: Analyzing ICFG mix017.oepc.i [2025-02-08 13:56:49,258 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 13:56:49,260 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix017.oepc.i that has 5 procedures, 52 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-02-08 13:56:49,260 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 13:56:49,306 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:56:49,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2025-02-08 13:56:49,366 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2025-02-08 13:56:49,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:56:49,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 120 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-02-08 13:56:49,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2025-02-08 13:56:49,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 106 flow [2025-02-08 13:56:49,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:56:49,403 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;@73168c9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:56:49,403 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-08 13:56:49,408 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:56:49,411 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 13:56:49,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:56:49,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:56:49,413 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:56:49,417 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 13:56:49,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:56:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash -165595651, now seen corresponding path program 1 times [2025-02-08 13:56:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:56:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951465899] [2025-02-08 13:56:49,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:56:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:56:49,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 13:56:49,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 13:56:49,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:56:49,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:56:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:56:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:56:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951465899] [2025-02-08 13:56:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951465899] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:56:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:56:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:56:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168043375] [2025-02-08 13:56:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:56:49,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:56:49,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:56:49,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:56:49,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:56:49,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2025-02-08 13:56:49,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2025-02-08 13:56:49,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:56:49,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2025-02-08 13:56:49,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:56:56,478 INFO L124 PetriNetUnfolderBase]: 78483/103259 cut-off events. [2025-02-08 13:56:56,479 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2025-02-08 13:56:56,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207303 conditions, 103259 events. 78483/103259 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 2987. Compared 624956 event pairs, 25911 based on Foata normal form. 0/85100 useless extension candidates. Maximal degree in co-relation 207291. Up to 93953 conditions per place. [2025-02-08 13:56:57,106 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 67 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2025-02-08 13:56:57,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 317 flow [2025-02-08 13:56:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:56:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:56:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-02-08 13:56:57,120 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6797385620915033 [2025-02-08 13:56:57,121 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 106 flow. Second operand 3 states and 104 transitions. [2025-02-08 13:56:57,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 317 flow [2025-02-08 13:56:57,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 13:56:57,136 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 149 flow [2025-02-08 13:56:57,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2025-02-08 13:56:57,140 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2025-02-08 13:56:57,141 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 149 flow [2025-02-08 13:56:57,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2025-02-08 13:56:57,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:56:57,141 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:56:57,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 13:56:57,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 13:56:57,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:56:57,142 INFO L85 PathProgramCache]: Analyzing trace with hash -461119829, now seen corresponding path program 1 times [2025-02-08 13:56:57,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:56:57,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217789402] [2025-02-08 13:56:57,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:56:57,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:56:57,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 13:56:57,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 13:56:57,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:56:57,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:56:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:56:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:56:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217789402] [2025-02-08 13:56:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217789402] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:56:57,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:56:57,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:56:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520842681] [2025-02-08 13:56:57,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:56:57,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:56:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:56:57,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:56:57,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:56:57,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2025-02-08 13:56:57,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:56:57,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:56:57,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2025-02-08 13:56:57,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:57:01,697 INFO L124 PetriNetUnfolderBase]: 53386/70284 cut-off events. [2025-02-08 13:57:01,697 INFO L125 PetriNetUnfolderBase]: For 4365/4365 co-relation queries the response was YES. [2025-02-08 13:57:01,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159192 conditions, 70284 events. 53386/70284 cut-off events. For 4365/4365 co-relation queries the response was YES. Maximal size of possible extension queue 2057. Compared 411403 event pairs, 16102 based on Foata normal form. 0/63469 useless extension candidates. Maximal degree in co-relation 159181. Up to 60977 conditions per place. [2025-02-08 13:57:02,019 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 63 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2025-02-08 13:57:02,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 325 flow [2025-02-08 13:57:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:57:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:57:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-02-08 13:57:02,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2025-02-08 13:57:02,022 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 149 flow. Second operand 4 states and 104 transitions. [2025-02-08 13:57:02,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 325 flow [2025-02-08 13:57:02,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 72 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:57:02,032 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 138 flow [2025-02-08 13:57:02,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-02-08 13:57:02,033 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2025-02-08 13:57:02,033 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 138 flow [2025-02-08 13:57:02,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:57:02,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:57:02,034 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:57:02,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 13:57:02,034 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 13:57:02,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:57:02,036 INFO L85 PathProgramCache]: Analyzing trace with hash -461119828, now seen corresponding path program 1 times [2025-02-08 13:57:02,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:57:02,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604255254] [2025-02-08 13:57:02,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:57:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:57:02,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 13:57:02,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 13:57:02,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:57:02,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:57:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:57:02,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:57:02,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604255254] [2025-02-08 13:57:02,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604255254] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:57:02,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:57:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:57:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659376867] [2025-02-08 13:57:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:57:02,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:57:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:57:02,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:57:02,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:57:02,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2025-02-08 13:57:02,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:57:02,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:57:02,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2025-02-08 13:57:02,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:57:05,901 INFO L124 PetriNetUnfolderBase]: 40367/53355 cut-off events. [2025-02-08 13:57:05,902 INFO L125 PetriNetUnfolderBase]: For 8108/8108 co-relation queries the response was YES. [2025-02-08 13:57:05,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118851 conditions, 53355 events. 40367/53355 cut-off events. For 8108/8108 co-relation queries the response was YES. Maximal size of possible extension queue 1471. Compared 303959 event pairs, 8821 based on Foata normal form. 0/51288 useless extension candidates. Maximal degree in co-relation 118839. Up to 25633 conditions per place. [2025-02-08 13:57:06,114 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 90 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2025-02-08 13:57:06,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 466 flow [2025-02-08 13:57:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:57:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:57:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2025-02-08 13:57:06,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2025-02-08 13:57:06,118 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 138 flow. Second operand 4 states and 135 transitions. [2025-02-08 13:57:06,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 466 flow [2025-02-08 13:57:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:57:06,126 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 190 flow [2025-02-08 13:57:06,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2025-02-08 13:57:06,127 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2025-02-08 13:57:06,127 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 190 flow [2025-02-08 13:57:06,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:57:06,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:57:06,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:57:06,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 13:57:06,128 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 13:57:06,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:57:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash -528460579, now seen corresponding path program 1 times [2025-02-08 13:57:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:57:06,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922928460] [2025-02-08 13:57:06,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:57:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:57:06,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 13:57:06,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 13:57:06,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:57:06,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:57:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:57:06,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:57:06,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922928460] [2025-02-08 13:57:06,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922928460] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:57:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:57:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:57:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551115408] [2025-02-08 13:57:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:57:06,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:57:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:57:06,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:57:06,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:57:06,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2025-02-08 13:57:06,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:57:06,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:57:06,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2025-02-08 13:57:06,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:57:09,818 INFO L124 PetriNetUnfolderBase]: 35759/47127 cut-off events. [2025-02-08 13:57:09,819 INFO L125 PetriNetUnfolderBase]: For 19128/19128 co-relation queries the response was YES. [2025-02-08 13:57:09,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114646 conditions, 47127 events. 35759/47127 cut-off events. For 19128/19128 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 265154 event pairs, 7023 based on Foata normal form. 0/46848 useless extension candidates. Maximal degree in co-relation 114633. Up to 18416 conditions per place. [2025-02-08 13:57:10,015 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 111 selfloop transitions, 13 changer transitions 4/132 dead transitions. [2025-02-08 13:57:10,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 132 transitions, 636 flow [2025-02-08 13:57:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:57:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:57:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2025-02-08 13:57:10,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6745098039215687 [2025-02-08 13:57:10,018 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 190 flow. Second operand 5 states and 172 transitions. [2025-02-08 13:57:10,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 132 transitions, 636 flow [2025-02-08 13:57:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 132 transitions, 618 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 13:57:10,041 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 214 flow [2025-02-08 13:57:10,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2025-02-08 13:57:10,042 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2025-02-08 13:57:10,042 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 214 flow [2025-02-08 13:57:10,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:57:10,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:57:10,043 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:57:10,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 13:57:10,043 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 13:57:10,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:57:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1412726765, now seen corresponding path program 1 times [2025-02-08 13:57:10,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:57:10,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572480828] [2025-02-08 13:57:10,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:57:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:57:10,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 13:57:10,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 13:57:10,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:57:10,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:57:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:57:10,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:57:10,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572480828] [2025-02-08 13:57:10,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572480828] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:57:10,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:57:10,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:57:10,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357433413] [2025-02-08 13:57:10,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:57:10,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:57:10,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:57:10,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:57:10,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 13:57:10,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2025-02-08 13:57:10,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:57:10,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:57:10,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2025-02-08 13:57:10,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:57:13,320 INFO L124 PetriNetUnfolderBase]: 34799/45831 cut-off events. [2025-02-08 13:57:13,320 INFO L125 PetriNetUnfolderBase]: For 28624/28624 co-relation queries the response was YES. [2025-02-08 13:57:13,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113177 conditions, 45831 events. 34799/45831 cut-off events. For 28624/28624 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 258927 event pairs, 6855 based on Foata normal form. 224/46000 useless extension candidates. Maximal degree in co-relation 113163. Up to 18416 conditions per place. [2025-02-08 13:57:13,471 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 0 selfloop transitions, 0 changer transitions 124/124 dead transitions. [2025-02-08 13:57:13,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 588 flow [2025-02-08 13:57:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:57:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:57:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2025-02-08 13:57:13,472 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5620915032679739 [2025-02-08 13:57:13,472 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 214 flow. Second operand 6 states and 172 transitions. [2025-02-08 13:57:13,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 124 transitions, 588 flow