./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:29:51,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:29:51,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:29:51,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:29:51,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:29:51,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:29:51,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:29:51,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:29:51,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:29:51,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:29:51,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:29:51,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:29:51,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:29:51,423 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:29:51,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:29:51,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:29:51,424 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 [2025-03-04 15:29:51,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:29:51,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:29:51,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:29:51,684 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:29:51,684 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:29:51,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2025-03-04 15:29:52,881 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ffb99b2/31daa1fee6304ef4a9fc604b0423dd38/FLAG7538210b2 [2025-03-04 15:29:53,087 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:29:53,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2025-03-04 15:29:53,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ffb99b2/31daa1fee6304ef4a9fc604b0423dd38/FLAG7538210b2 [2025-03-04 15:29:53,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ffb99b2/31daa1fee6304ef4a9fc604b0423dd38 [2025-03-04 15:29:53,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:29:53,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:29:53,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:29:53,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:29:53,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:29:53,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2251d86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53, skipping insertion in model container [2025-03-04 15:29:53,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:29:53,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:29:53,607 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:29:53,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:29:53,639 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:29:53,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53 WrapperNode [2025-03-04 15:29:53,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:29:53,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:29:53,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:29:53,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:29:53,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,671 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2025-03-04 15:29:53,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:29:53,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:29:53,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:29:53,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:29:53,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,699 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]. [2025-03-04 15:29:53,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,702 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:29:53,706 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:29:53,706 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:29:53,706 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:29:53,707 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (1/1) ... [2025-03-04 15:29:53,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:29:53,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:53,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:29:53,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:29:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:29:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:29:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:29:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 15:29:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:29:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:29:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:29:53,759 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:29:53,831 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:29:53,832 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:29:54,039 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:29:54,040 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:29:54,189 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:29:54,190 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:29:54,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:29:54 BoogieIcfgContainer [2025-03-04 15:29:54,190 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:29:54,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:29:54,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:29:54,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:29:54,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:29:53" (1/3) ... [2025-03-04 15:29:54,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb241b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:29:54, skipping insertion in model container [2025-03-04 15:29:54,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:53" (2/3) ... [2025-03-04 15:29:54,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb241b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:29:54, skipping insertion in model container [2025-03-04 15:29:54,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:29:54" (3/3) ... [2025-03-04 15:29:54,197 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2025-03-04 15:29:54,206 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:29:54,207 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c that has 5 procedures, 47 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2025-03-04 15:29:54,208 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:29:54,263 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 15:29:54,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 128 flow [2025-03-04 15:29:54,328 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2025-03-04 15:29:54,331 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 15:29:54,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 4/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 114 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-03-04 15:29:54,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 128 flow [2025-03-04 15:29:54,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 109 flow [2025-03-04 15:29:54,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:29:54,356 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;@505f5bb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:29:54,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-04 15:29:54,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:29:54,361 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2025-03-04 15:29:54,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:29:54,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:54,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:29:54,362 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:29:54,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash 381744874, now seen corresponding path program 1 times [2025-03-04 15:29:54,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319610500] [2025-03-04 15:29:54,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:54,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:29:54,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:29:54,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:54,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:54,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:54,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319610500] [2025-03-04 15:29:54,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319610500] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:54,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:54,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:29:54,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811652552] [2025-03-04 15:29:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:54,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:29:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:54,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:29:54,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:29:54,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-04 15:29:54,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:54,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:54,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-04 15:29:54,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:56,513 INFO L124 PetriNetUnfolderBase]: 25764/31176 cut-off events. [2025-03-04 15:29:56,513 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2025-03-04 15:29:56,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62441 conditions, 31176 events. 25764/31176 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 2243. Compared 132704 event pairs, 5100 based on Foata normal form. 39/13832 useless extension candidates. Maximal degree in co-relation 58536. Up to 30081 conditions per place. [2025-03-04 15:29:56,733 INFO L140 encePairwiseOnDemand]: 29/50 looper letters, 46 selfloop transitions, 7 changer transitions 1/62 dead transitions. [2025-03-04 15:29:56,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 271 flow [2025-03-04 15:29:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:29:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:29:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2025-03-04 15:29:56,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2025-03-04 15:29:56,748 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 109 flow. Second operand 3 states and 106 transitions. [2025-03-04 15:29:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 271 flow [2025-03-04 15:29:56,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 247 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-04 15:29:56,765 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 161 flow [2025-03-04 15:29:56,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2025-03-04 15:29:56,771 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2025-03-04 15:29:56,772 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 161 flow [2025-03-04 15:29:56,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:56,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:56,772 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:29:56,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:29:56,772 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:29:56,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 381744876, now seen corresponding path program 1 times [2025-03-04 15:29:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:56,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299203466] [2025-03-04 15:29:56,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:56,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:29:56,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:29:56,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:56,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:56,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299203466] [2025-03-04 15:29:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299203466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:56,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:56,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:29:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491779594] [2025-03-04 15:29:56,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:56,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:29:56,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:56,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:29:56,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:29:56,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-04 15:29:56,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:56,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:56,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-04 15:29:56,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:58,650 INFO L124 PetriNetUnfolderBase]: 31030/38586 cut-off events. [2025-03-04 15:29:58,650 INFO L125 PetriNetUnfolderBase]: For 2507/2507 co-relation queries the response was YES. [2025-03-04 15:29:58,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103819 conditions, 38586 events. 31030/38586 cut-off events. For 2507/2507 co-relation queries the response was YES. Maximal size of possible extension queue 3026. Compared 189816 event pairs, 12297 based on Foata normal form. 0/17897 useless extension candidates. Maximal degree in co-relation 46525. Up to 26985 conditions per place. [2025-03-04 15:29:58,871 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 65 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2025-03-04 15:29:58,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 386 flow [2025-03-04 15:29:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:29:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:29:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-03-04 15:29:58,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68 [2025-03-04 15:29:58,872 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 161 flow. Second operand 3 states and 102 transitions. [2025-03-04 15:29:58,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 386 flow [2025-03-04 15:29:58,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:58,875 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 165 flow [2025-03-04 15:29:58,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2025-03-04 15:29:58,875 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2025-03-04 15:29:58,876 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 165 flow [2025-03-04 15:29:58,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:58,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:58,876 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 15:29:58,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:29:58,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:29:58,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1784620208, now seen corresponding path program 1 times [2025-03-04 15:29:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820145570] [2025-03-04 15:29:58,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:58,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:29:58,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:29:58,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:58,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:58,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820145570] [2025-03-04 15:29:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820145570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435633055] [2025-03-04 15:29:58,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:58,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:58,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:58,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:29:58,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:29:58,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:29:58,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:58,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:58,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:29:59,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:59,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:29:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435633055] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:59,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:29:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-03-04 15:29:59,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96942668] [2025-03-04 15:29:59,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:59,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:59,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:59,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:59,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:29:59,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-04 15:29:59,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:59,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:59,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-04 15:29:59,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:01,047 INFO L124 PetriNetUnfolderBase]: 36670/45832 cut-off events. [2025-03-04 15:30:01,047 INFO L125 PetriNetUnfolderBase]: For 7762/8151 co-relation queries the response was YES. [2025-03-04 15:30:01,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126977 conditions, 45832 events. 36670/45832 cut-off events. For 7762/8151 co-relation queries the response was YES. Maximal size of possible extension queue 3494. Compared 240900 event pairs, 6474 based on Foata normal form. 0/23706 useless extension candidates. Maximal degree in co-relation 36961. Up to 31431 conditions per place. [2025-03-04 15:30:01,263 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 46 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2025-03-04 15:30:01,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 405 flow [2025-03-04 15:30:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-03-04 15:30:01,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.57 [2025-03-04 15:30:01,265 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 165 flow. Second operand 4 states and 114 transitions. [2025-03-04 15:30:01,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 405 flow [2025-03-04 15:30:01,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:01,269 INFO L231 Difference]: Finished difference. Result has 51 places, 62 transitions, 351 flow [2025-03-04 15:30:01,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=51, PETRI_TRANSITIONS=62} [2025-03-04 15:30:01,269 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2025-03-04 15:30:01,269 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 62 transitions, 351 flow [2025-03-04 15:30:01,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:01,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:01,269 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 15:30:01,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:01,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:01,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:30:01,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:01,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1784620210, now seen corresponding path program 1 times [2025-03-04 15:30:01,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:01,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030274473] [2025-03-04 15:30:01,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:01,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:01,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:01,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:01,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:01,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030274473] [2025-03-04 15:30:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030274473] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680061833] [2025-03-04 15:30:01,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:01,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:01,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:01,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:01,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:30:01,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:01,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:01,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:01,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:01,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:01,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:01,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:30:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680061833] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:01,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:30:01,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-03-04 15:30:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804575558] [2025-03-04 15:30:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:01,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:01,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:01,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:30:01,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-04 15:30:01,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 62 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:01,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:01,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-04 15:30:01,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:03,489 INFO L124 PetriNetUnfolderBase]: 34450/43021 cut-off events. [2025-03-04 15:30:03,489 INFO L125 PetriNetUnfolderBase]: For 26821/26821 co-relation queries the response was YES. [2025-03-04 15:30:03,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161015 conditions, 43021 events. 34450/43021 cut-off events. For 26821/26821 co-relation queries the response was YES. Maximal size of possible extension queue 3245. Compared 215573 event pairs, 6439 based on Foata normal form. 0/27604 useless extension candidates. Maximal degree in co-relation 72488. Up to 29127 conditions per place. [2025-03-04 15:30:03,804 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 88 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2025-03-04 15:30:03,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 734 flow [2025-03-04 15:30:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2025-03-04 15:30:03,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54 [2025-03-04 15:30:03,805 INFO L175 Difference]: Start difference. First operand has 51 places, 62 transitions, 351 flow. Second operand 4 states and 108 transitions. [2025-03-04 15:30:03,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 734 flow [2025-03-04 15:30:03,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 100 transitions, 675 flow, removed 29 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:03,828 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 308 flow [2025-03-04 15:30:03,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2025-03-04 15:30:03,829 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2025-03-04 15:30:03,829 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 308 flow [2025-03-04 15:30:03,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:03,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:03,829 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 15:30:03,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 15:30:04,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 15:30:04,030 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:30:04,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1784620211, now seen corresponding path program 1 times [2025-03-04 15:30:04,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452102743] [2025-03-04 15:30:04,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:04,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:04,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:04,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:04,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452102743] [2025-03-04 15:30:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452102743] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422410834] [2025-03-04 15:30:04,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:04,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:04,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:04,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:30:04,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:04,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:04,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:04,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:04,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:04,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:04,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422410834] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:04,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:04,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-03-04 15:30:04,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682376995] [2025-03-04 15:30:04,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:04,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:30:04,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:04,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:30:04,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:30:04,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-04 15:30:04,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:04,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:04,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-04 15:30:04,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:09,311 INFO L124 PetriNetUnfolderBase]: 84705/105732 cut-off events. [2025-03-04 15:30:09,312 INFO L125 PetriNetUnfolderBase]: For 70032/70032 co-relation queries the response was YES. [2025-03-04 15:30:09,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355534 conditions, 105732 events. 84705/105732 cut-off events. For 70032/70032 co-relation queries the response was YES. Maximal size of possible extension queue 5765. Compared 585172 event pairs, 7976 based on Foata normal form. 0/68977 useless extension candidates. Maximal degree in co-relation 214621. Up to 40768 conditions per place. [2025-03-04 15:30:09,893 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 208 selfloop transitions, 10 changer transitions 0/226 dead transitions. [2025-03-04 15:30:09,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 226 transitions, 1556 flow [2025-03-04 15:30:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:30:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:30:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2025-03-04 15:30:09,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2025-03-04 15:30:09,894 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 308 flow. Second operand 6 states and 218 transitions. [2025-03-04 15:30:09,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 226 transitions, 1556 flow [2025-03-04 15:30:09,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 226 transitions, 1551 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:30:09,903 INFO L231 Difference]: Finished difference. Result has 58 places, 66 transitions, 400 flow [2025-03-04 15:30:09,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=58, PETRI_TRANSITIONS=66} [2025-03-04 15:30:09,904 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2025-03-04 15:30:09,904 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 66 transitions, 400 flow [2025-03-04 15:30:09,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:09,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:09,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 15:30:09,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 15:30:10,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:10,104 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:30:10,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1784620209, now seen corresponding path program 1 times [2025-03-04 15:30:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602654692] [2025-03-04 15:30:10,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:10,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:10,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:10,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:10,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:10,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602654692] [2025-03-04 15:30:10,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602654692] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160117595] [2025-03-04 15:30:10,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:10,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:10,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:10,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:10,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:30:10,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:10,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:10,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:10,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:10,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:10,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:10,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:10,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160117595] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:10,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:10,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-03-04 15:30:10,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389859808] [2025-03-04 15:30:10,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:10,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:30:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:10,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:30:10,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:30:10,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-04 15:30:10,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:10,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:10,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-04 15:30:10,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:20,257 INFO L124 PetriNetUnfolderBase]: 145420/186456 cut-off events. [2025-03-04 15:30:20,257 INFO L125 PetriNetUnfolderBase]: For 231085/231628 co-relation queries the response was YES. [2025-03-04 15:30:20,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632643 conditions, 186456 events. 145420/186456 cut-off events. For 231085/231628 co-relation queries the response was YES. Maximal size of possible extension queue 10410. Compared 1170002 event pairs, 12135 based on Foata normal form. 20341/145858 useless extension candidates. Maximal degree in co-relation 305408. Up to 91754 conditions per place. [2025-03-04 15:30:21,397 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 121 selfloop transitions, 62 changer transitions 0/191 dead transitions. [2025-03-04 15:30:21,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 191 transitions, 1477 flow [2025-03-04 15:30:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:30:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:30:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2025-03-04 15:30:21,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.73 [2025-03-04 15:30:21,399 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 400 flow. Second operand 6 states and 219 transitions. [2025-03-04 15:30:21,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 191 transitions, 1477 flow [2025-03-04 15:30:21,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 191 transitions, 1426 flow, removed 21 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:21,658 INFO L231 Difference]: Finished difference. Result has 66 places, 123 transitions, 1198 flow [2025-03-04 15:30:21,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1198, PETRI_PLACES=66, PETRI_TRANSITIONS=123} [2025-03-04 15:30:21,658 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2025-03-04 15:30:21,658 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 123 transitions, 1198 flow [2025-03-04 15:30:21,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:21,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:21,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:21,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:21,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:21,863 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:30:21,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 478484872, now seen corresponding path program 1 times [2025-03-04 15:30:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131593162] [2025-03-04 15:30:21,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:21,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:30:21,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:30:21,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:21,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131593162] [2025-03-04 15:30:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131593162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:21,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:21,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:30:21,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957078213] [2025-03-04 15:30:21,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:21,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:30:21,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:21,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:30:21,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:30:21,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-04 15:30:21,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 123 transitions, 1198 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:21,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:21,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-04 15:30:21,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand