./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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/pthread/queue_ok_longer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:20:53,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:20:53,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:20:53,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:20:53,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:20:53,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:20:53,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:20:53,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:20:53,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:20:53,956 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:20:53,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:20:53,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:20:53,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:20:53,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:20:53,957 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:20:53,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:20:53,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:20:53,957 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:20:53,958 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:20:53,959 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:20:53,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:20:53,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:20:53,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:20:53,960 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 -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2025-03-09 06:20:54,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:20:54,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:20:54,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:20:54,212 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:20:54,212 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:20:54,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longer.i [2025-03-09 06:20:55,429 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e5c8f05/b47165ec6daf4cd69ff7210ffa228d82/FLAG4e407a65a [2025-03-09 06:20:55,769 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:20:55,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2025-03-09 06:20:55,785 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e5c8f05/b47165ec6daf4cd69ff7210ffa228d82/FLAG4e407a65a [2025-03-09 06:20:56,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e5c8f05/b47165ec6daf4cd69ff7210ffa228d82 [2025-03-09 06:20:56,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:20:56,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:20:56,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:20:56,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:20:56,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:20:56,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6b090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56, skipping insertion in model container [2025-03-09 06:20:56,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:20:56,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:20:56,363 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:20:56,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:20:56,488 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:20:56,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56 WrapperNode [2025-03-09 06:20:56,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:20:56,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:20:56,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:20:56,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:20:56,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,576 INFO L138 Inliner]: procedures = 274, calls = 854, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1007 [2025-03-09 06:20:56,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:20:56,577 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:20:56,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:20:56,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:20:56,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,614 INFO L175 MemorySlicer]: Split 835 memory accesses to 4 slices as follows [2, 5, 402, 426]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [2, 5, 400, 403]. The 11 writes are split as follows [0, 0, 1, 10]. [2025-03-09 06:20:56,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,649 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:20:56,665 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:20:56,665 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:20:56,665 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:20:56,665 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (1/1) ... [2025-03-09 06:20:56,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:20:56,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:56,690 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) [2025-03-09 06:20:56,693 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 [2025-03-09 06:20:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:20:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:20:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 06:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:20:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:20:56,713 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:20:56,823 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:20:56,825 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:20:57,860 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:20:57,860 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:21:03,143 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:21:03,144 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:21:03,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:21:03 BoogieIcfgContainer [2025-03-09 06:21:03,145 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:21:03,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:21:03,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:21:03,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:21:03,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:20:56" (1/3) ... [2025-03-09 06:21:03,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9f8690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:21:03, skipping insertion in model container [2025-03-09 06:21:03,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:20:56" (2/3) ... [2025-03-09 06:21:03,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9f8690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:21:03, skipping insertion in model container [2025-03-09 06:21:03,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:21:03" (3/3) ... [2025-03-09 06:21:03,152 INFO L128 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2025-03-09 06:21:03,163 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:21:03,165 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG queue_ok_longer.i that has 3 procedures, 55 locations, 1 initial locations, 2 loop locations, and 12 error locations. [2025-03-09 06:21:03,165 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:21:03,238 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:21:03,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 136 flow [2025-03-09 06:21:03,335 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2025-03-09 06:21:03,336 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:21:03,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 7/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 169 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2025-03-09 06:21:03,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 136 flow [2025-03-09 06:21:03,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 123 flow [2025-03-09 06:21:03,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:21:03,363 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;@30d66c7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:21:03,365 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-03-09 06:21:03,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:21:03,400 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2025-03-09 06:21:03,400 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:21:03,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:03,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:03,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:03,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1354720109, now seen corresponding path program 1 times [2025-03-09 06:21:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:03,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186812584] [2025-03-09 06:21:03,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:03,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:03,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:21:03,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:21:03,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:03,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:04,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:04,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186812584] [2025-03-09 06:21:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186812584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:04,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:21:04,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618025860] [2025-03-09 06:21:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:04,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:04,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:04,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:04,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:04,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:04,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-03-09 06:21:04,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:04,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:04,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:05,528 INFO L124 PetriNetUnfolderBase]: 1019/2078 cut-off events. [2025-03-09 06:21:05,528 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-03-09 06:21:05,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 2078 events. 1019/2078 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13402 event pairs, 215 based on Foata normal form. 42/1748 useless extension candidates. Maximal degree in co-relation 3596. Up to 1122 conditions per place. [2025-03-09 06:21:05,546 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 81 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2025-03-09 06:21:05,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 408 flow [2025-03-09 06:21:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:21:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:21:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2025-03-09 06:21:05,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6754098360655738 [2025-03-09 06:21:05,565 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 123 flow. Second operand 5 states and 206 transitions. [2025-03-09 06:21:05,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 408 flow [2025-03-09 06:21:05,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:05,576 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 164 flow [2025-03-09 06:21:05,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2025-03-09 06:21:05,582 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2025-03-09 06:21:05,584 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 164 flow [2025-03-09 06:21:05,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-03-09 06:21:05,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:05,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:05,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:21:05,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:05,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1338828920, now seen corresponding path program 1 times [2025-03-09 06:21:05,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:05,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704090102] [2025-03-09 06:21:05,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:05,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:05,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:21:05,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:21:05,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:05,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:06,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:06,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704090102] [2025-03-09 06:21:06,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704090102] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:06,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747276108] [2025-03-09 06:21:06,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:06,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:21:06,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:06,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:21:06,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:21:06,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:06,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2025-03-09 06:21:06,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:06,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:06,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:06,963 INFO L124 PetriNetUnfolderBase]: 1151/2324 cut-off events. [2025-03-09 06:21:06,963 INFO L125 PetriNetUnfolderBase]: For 331/339 co-relation queries the response was YES. [2025-03-09 06:21:06,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 2324 events. 1151/2324 cut-off events. For 331/339 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14834 event pairs, 209 based on Foata normal form. 50/2032 useless extension candidates. Maximal degree in co-relation 4205. Up to 1206 conditions per place. [2025-03-09 06:21:06,976 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 108 selfloop transitions, 11 changer transitions 0/140 dead transitions. [2025-03-09 06:21:06,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 140 transitions, 579 flow [2025-03-09 06:21:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:21:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:21:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 283 transitions. [2025-03-09 06:21:06,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6627634660421545 [2025-03-09 06:21:06,979 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 164 flow. Second operand 7 states and 283 transitions. [2025-03-09 06:21:06,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 140 transitions, 579 flow [2025-03-09 06:21:06,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 140 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:21:06,987 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 233 flow [2025-03-09 06:21:06,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2025-03-09 06:21:06,989 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-03-09 06:21:06,989 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 233 flow [2025-03-09 06:21:06,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2025-03-09 06:21:06,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:06,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:06,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:21:06,991 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:06,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash -866966061, now seen corresponding path program 1 times [2025-03-09 06:21:06,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:06,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27848407] [2025-03-09 06:21:06,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:06,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:07,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:21:07,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:21:07,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:07,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:07,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:07,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27848407] [2025-03-09 06:21:07,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27848407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:07,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:07,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:21:07,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662718101] [2025-03-09 06:21:07,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:07,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:21:07,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:07,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:21:07,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:21:07,192 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2025-03-09 06:21:07,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-03-09 06:21:07,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:07,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2025-03-09 06:21:07,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:07,404 INFO L124 PetriNetUnfolderBase]: 515/1161 cut-off events. [2025-03-09 06:21:07,404 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2025-03-09 06:21:07,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1161 events. 515/1161 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6805 event pairs, 296 based on Foata normal form. 29/1084 useless extension candidates. Maximal degree in co-relation 2373. Up to 510 conditions per place. [2025-03-09 06:21:07,409 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 42 selfloop transitions, 2 changer transitions 6/73 dead transitions. [2025-03-09 06:21:07,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 319 flow [2025-03-09 06:21:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:21:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:21:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2025-03-09 06:21:07,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2025-03-09 06:21:07,411 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 233 flow. Second operand 3 states and 120 transitions. [2025-03-09 06:21:07,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 319 flow [2025-03-09 06:21:07,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 300 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-03-09 06:21:07,417 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 183 flow [2025-03-09 06:21:07,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2025-03-09 06:21:07,417 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2025-03-09 06:21:07,418 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 183 flow [2025-03-09 06:21:07,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-03-09 06:21:07,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:07,418 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:07,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:21:07,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:07,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:07,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1445977553, now seen corresponding path program 1 times [2025-03-09 06:21:07,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:07,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490714861] [2025-03-09 06:21:07,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:07,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:07,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:21:07,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:21:07,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:07,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:07,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490714861] [2025-03-09 06:21:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490714861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:07,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:07,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260531312] [2025-03-09 06:21:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:07,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:07,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:07,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:07,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:07,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:07,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-03-09 06:21:07,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:07,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:07,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:07,845 INFO L124 PetriNetUnfolderBase]: 440/978 cut-off events. [2025-03-09 06:21:07,845 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-03-09 06:21:07,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 978 events. 440/978 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5190 event pairs, 293 based on Foata normal form. 24/931 useless extension candidates. Maximal degree in co-relation 1879. Up to 591 conditions per place. [2025-03-09 06:21:07,852 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 53 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-03-09 06:21:07,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 325 flow [2025-03-09 06:21:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2025-03-09 06:21:07,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6188524590163934 [2025-03-09 06:21:07,853 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 183 flow. Second operand 4 states and 151 transitions. [2025-03-09 06:21:07,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 325 flow [2025-03-09 06:21:07,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 319 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-09 06:21:07,857 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 195 flow [2025-03-09 06:21:07,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2025-03-09 06:21:07,858 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-03-09 06:21:07,858 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 195 flow [2025-03-09 06:21:07,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-03-09 06:21:07,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:07,858 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:07,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:21:07,858 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:07,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1402602737, now seen corresponding path program 1 times [2025-03-09 06:21:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663582656] [2025-03-09 06:21:07,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:07,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:21:07,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:21:07,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:07,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:08,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663582656] [2025-03-09 06:21:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663582656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:08,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:08,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:21:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564178312] [2025-03-09 06:21:08,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:08,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:21:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:08,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:21:08,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:21:08,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2025-03-09 06:21:08,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2025-03-09 06:21:08,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:08,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2025-03-09 06:21:08,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:08,751 INFO L124 PetriNetUnfolderBase]: 398/936 cut-off events. [2025-03-09 06:21:08,751 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2025-03-09 06:21:08,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 936 events. 398/936 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4990 event pairs, 118 based on Foata normal form. 12/895 useless extension candidates. Maximal degree in co-relation 1461. Up to 457 conditions per place. [2025-03-09 06:21:08,756 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 55 selfloop transitions, 5 changer transitions 3/86 dead transitions. [2025-03-09 06:21:08,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 86 transitions, 371 flow [2025-03-09 06:21:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:21:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:21:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2025-03-09 06:21:08,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6131147540983607 [2025-03-09 06:21:08,757 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 195 flow. Second operand 5 states and 187 transitions. [2025-03-09 06:21:08,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 86 transitions, 371 flow [2025-03-09 06:21:08,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 86 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:21:08,759 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 198 flow [2025-03-09 06:21:08,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2025-03-09 06:21:08,760 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-09 06:21:08,760 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 198 flow [2025-03-09 06:21:08,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2025-03-09 06:21:08,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:08,760 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:08,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:21:08,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:08,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash -867245143, now seen corresponding path program 1 times [2025-03-09 06:21:08,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:08,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971231984] [2025-03-09 06:21:08,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:08,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:08,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:21:08,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:21:08,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:08,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:09,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971231984] [2025-03-09 06:21:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971231984] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:09,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469230192] [2025-03-09 06:21:09,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:09,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:09,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:09,966 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) [2025-03-09 06:21:09,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:21:10,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:21:10,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:21:10,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:10,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:10,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-09 06:21:10,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:10,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2025-03-09 06:21:10,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2025-03-09 06:21:10,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2025-03-09 06:21:10,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2025-03-09 06:21:10,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2025-03-09 06:21:10,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2025-03-09 06:21:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:10,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469230192] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:11,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:11,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2025-03-09 06:21:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368990248] [2025-03-09 06:21:11,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:11,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 06:21:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:11,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 06:21:11,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-03-09 06:21:11,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2025-03-09 06:21:11,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 198 flow. Second operand has 18 states, 18 states have (on average 22.27777777777778) internal successors, (401), 18 states have internal predecessors, (401), 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) [2025-03-09 06:21:11,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:11,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2025-03-09 06:21:11,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:13,646 INFO L124 PetriNetUnfolderBase]: 1414/3012 cut-off events. [2025-03-09 06:21:13,647 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2025-03-09 06:21:13,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6648 conditions, 3012 events. 1414/3012 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 18180 event pairs, 163 based on Foata normal form. 48/2885 useless extension candidates. Maximal degree in co-relation 5411. Up to 500 conditions per place. [2025-03-09 06:21:13,667 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 231 selfloop transitions, 31 changer transitions 3/283 dead transitions. [2025-03-09 06:21:13,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 283 transitions, 1301 flow [2025-03-09 06:21:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 06:21:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-09 06:21:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 707 transitions. [2025-03-09 06:21:13,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5268256333830105 [2025-03-09 06:21:13,670 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 198 flow. Second operand 22 states and 707 transitions. [2025-03-09 06:21:13,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 283 transitions, 1301 flow [2025-03-09 06:21:13,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 283 transitions, 1291 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:21:13,681 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 403 flow [2025-03-09 06:21:13,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=403, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2025-03-09 06:21:13,681 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2025-03-09 06:21:13,682 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 403 flow [2025-03-09 06:21:13,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.27777777777778) internal successors, (401), 18 states have internal predecessors, (401), 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) [2025-03-09 06:21:13,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:13,683 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:13,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:21:13,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-09 06:21:13,887 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:13,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:13,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1114793560, now seen corresponding path program 1 times [2025-03-09 06:21:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:13,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909751013] [2025-03-09 06:21:13,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:13,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:13,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:21:13,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:21:13,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:13,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:15,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909751013] [2025-03-09 06:21:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909751013] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288412172] [2025-03-09 06:21:15,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:15,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:15,901 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) [2025-03-09 06:21:15,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:21:15,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:21:16,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:21:16,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:16,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:16,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-09 06:21:16,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:16,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2025-03-09 06:21:16,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2025-03-09 06:21:16,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2025-03-09 06:21:16,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2025-03-09 06:21:16,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2025-03-09 06:21:16,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2025-03-09 06:21:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:16,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:16,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288412172] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:16,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2025-03-09 06:21:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813558331] [2025-03-09 06:21:16,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:16,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 06:21:16,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:16,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 06:21:16,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2025-03-09 06:21:17,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 61 [2025-03-09 06:21:17,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 403 flow. Second operand has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 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) [2025-03-09 06:21:17,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:17,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 61 [2025-03-09 06:21:17,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:19,304 INFO L124 PetriNetUnfolderBase]: 2073/4587 cut-off events. [2025-03-09 06:21:19,304 INFO L125 PetriNetUnfolderBase]: For 2678/2678 co-relation queries the response was YES. [2025-03-09 06:21:19,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11225 conditions, 4587 events. 2073/4587 cut-off events. For 2678/2678 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 31834 event pairs, 243 based on Foata normal form. 48/4426 useless extension candidates. Maximal degree in co-relation 10440. Up to 2041 conditions per place. [2025-03-09 06:21:19,340 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 195 selfloop transitions, 23 changer transitions 3/241 dead transitions. [2025-03-09 06:21:19,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 241 transitions, 1322 flow [2025-03-09 06:21:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 06:21:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 06:21:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 534 transitions. [2025-03-09 06:21:19,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5471311475409836 [2025-03-09 06:21:19,342 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 403 flow. Second operand 16 states and 534 transitions. [2025-03-09 06:21:19,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 241 transitions, 1322 flow [2025-03-09 06:21:19,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 241 transitions, 1254 flow, removed 28 selfloop flow, removed 6 redundant places. [2025-03-09 06:21:19,360 INFO L231 Difference]: Finished difference. Result has 114 places, 103 transitions, 542 flow [2025-03-09 06:21:19,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=542, PETRI_PLACES=114, PETRI_TRANSITIONS=103} [2025-03-09 06:21:19,361 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2025-03-09 06:21:19,361 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 103 transitions, 542 flow [2025-03-09 06:21:19,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 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) [2025-03-09 06:21:19,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:19,362 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:19,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:21:19,562 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,SelfDestructingSolverStorable6 [2025-03-09 06:21:19,562 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:19,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1869685300, now seen corresponding path program 1 times [2025-03-09 06:21:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392252935] [2025-03-09 06:21:19,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:19,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:19,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:19,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:19,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:21,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392252935] [2025-03-09 06:21:21,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392252935] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885445407] [2025-03-09 06:21:21,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:21,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:21,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:21,262 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) [2025-03-09 06:21:21,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:21:21,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:21,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:21,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:21,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:21,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-09 06:21:21,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:21,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2025-03-09 06:21:21,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:21,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:21,643 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:21,668 INFO L349 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2025-03-09 06:21:21,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 59 [2025-03-09 06:21:21,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:21,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:21,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:21,733 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:21,735 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:21,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2025-03-09 06:21:21,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:21,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2025-03-09 06:21:21,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2025-03-09 06:21:21,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:21,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2025-03-09 06:21:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:21,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:22,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885445407] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:22,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 20 [2025-03-09 06:21:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607118237] [2025-03-09 06:21:22,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:22,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 06:21:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:22,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 06:21:22,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2025-03-09 06:21:22,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2025-03-09 06:21:22,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 103 transitions, 542 flow. Second operand has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 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) [2025-03-09 06:21:22,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:22,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2025-03-09 06:21:22,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:25,227 INFO L124 PetriNetUnfolderBase]: 2300/5076 cut-off events. [2025-03-09 06:21:25,228 INFO L125 PetriNetUnfolderBase]: For 3096/3096 co-relation queries the response was YES. [2025-03-09 06:21:25,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12622 conditions, 5076 events. 2300/5076 cut-off events. For 3096/3096 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 35398 event pairs, 263 based on Foata normal form. 48/4894 useless extension candidates. Maximal degree in co-relation 11781. Up to 967 conditions per place. [2025-03-09 06:21:25,263 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 248 selfloop transitions, 61 changer transitions 3/334 dead transitions. [2025-03-09 06:21:25,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 334 transitions, 1757 flow [2025-03-09 06:21:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 06:21:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 06:21:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 903 transitions. [2025-03-09 06:21:25,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5286885245901639 [2025-03-09 06:21:25,271 INFO L175 Difference]: Start difference. First operand has 114 places, 103 transitions, 542 flow. Second operand 28 states and 903 transitions. [2025-03-09 06:21:25,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 334 transitions, 1757 flow [2025-03-09 06:21:25,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 334 transitions, 1747 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-09 06:21:25,298 INFO L231 Difference]: Finished difference. Result has 142 places, 117 transitions, 783 flow [2025-03-09 06:21:25,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=783, PETRI_PLACES=142, PETRI_TRANSITIONS=117} [2025-03-09 06:21:25,303 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 85 predicate places. [2025-03-09 06:21:25,303 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 117 transitions, 783 flow [2025-03-09 06:21:25,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 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) [2025-03-09 06:21:25,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:25,304 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:25,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:21:25,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:25,505 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:25,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2125668339, now seen corresponding path program 1 times [2025-03-09 06:21:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:25,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840901427] [2025-03-09 06:21:25,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:25,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:25,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:21:25,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:21:25,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:25,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:25,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:25,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840901427] [2025-03-09 06:21:25,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840901427] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:25,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14881815] [2025-03-09 06:21:25,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:25,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:25,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:25,684 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) [2025-03-09 06:21:25,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:21:25,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:21:26,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:21:26,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:26,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:26,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:21:26,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:26,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:21:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14881815] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:21:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:21:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762754563] [2025-03-09 06:21:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:26,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:21:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:26,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:21:26,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:21:26,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:26,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 117 transitions, 783 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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) [2025-03-09 06:21:26,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:26,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:26,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:27,038 INFO L124 PetriNetUnfolderBase]: 2165/4829 cut-off events. [2025-03-09 06:21:27,039 INFO L125 PetriNetUnfolderBase]: For 5039/5039 co-relation queries the response was YES. [2025-03-09 06:21:27,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13205 conditions, 4829 events. 2165/4829 cut-off events. For 5039/5039 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 33595 event pairs, 283 based on Foata normal form. 108/4599 useless extension candidates. Maximal degree in co-relation 12582. Up to 2952 conditions per place. [2025-03-09 06:21:27,066 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 103 selfloop transitions, 13 changer transitions 3/147 dead transitions. [2025-03-09 06:21:27,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 147 transitions, 1088 flow [2025-03-09 06:21:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:21:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:21:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2025-03-09 06:21:27,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2025-03-09 06:21:27,068 INFO L175 Difference]: Start difference. First operand has 142 places, 117 transitions, 783 flow. Second operand 6 states and 210 transitions. [2025-03-09 06:21:27,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 147 transitions, 1088 flow [2025-03-09 06:21:27,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 147 transitions, 991 flow, removed 34 selfloop flow, removed 13 redundant places. [2025-03-09 06:21:27,109 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 708 flow [2025-03-09 06:21:27,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=708, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2025-03-09 06:21:27,110 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 76 predicate places. [2025-03-09 06:21:27,110 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 708 flow [2025-03-09 06:21:27,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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) [2025-03-09 06:21:27,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:27,111 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:27,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:27,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:27,312 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:27,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2125667346, now seen corresponding path program 1 times [2025-03-09 06:21:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389540857] [2025-03-09 06:21:27,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:27,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:21:27,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:21:27,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:27,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:28,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:28,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389540857] [2025-03-09 06:21:28,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389540857] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:28,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654361608] [2025-03-09 06:21:28,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:28,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:28,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:28,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:28,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:21:28,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:21:28,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:21:28,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:28,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:28,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-09 06:21:28,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:28,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2025-03-09 06:21:29,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:29,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:29,078 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:29,106 INFO L349 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2025-03-09 06:21:29,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 59 [2025-03-09 06:21:29,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:29,173 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:29,175 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:29,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2025-03-09 06:21:29,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:29,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2025-03-09 06:21:29,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:29,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-03-09 06:21:29,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:29,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-03-09 06:21:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:29,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654361608] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:29,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2025-03-09 06:21:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830423803] [2025-03-09 06:21:29,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:29,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-09 06:21:29,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:29,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-09 06:21:29,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2025-03-09 06:21:29,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 708 flow. Second operand has 22 states, 22 states have (on average 25.045454545454547) internal successors, (551), 22 states have internal predecessors, (551), 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) [2025-03-09 06:21:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:29,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:29,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:31,809 INFO L124 PetriNetUnfolderBase]: 2514/5634 cut-off events. [2025-03-09 06:21:31,809 INFO L125 PetriNetUnfolderBase]: For 4965/4965 co-relation queries the response was YES. [2025-03-09 06:21:31,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14768 conditions, 5634 events. 2514/5634 cut-off events. For 4965/4965 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 39705 event pairs, 303 based on Foata normal form. 72/5434 useless extension candidates. Maximal degree in co-relation 14202. Up to 1756 conditions per place. [2025-03-09 06:21:31,836 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 252 selfloop transitions, 47 changer transitions 3/325 dead transitions. [2025-03-09 06:21:31,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 325 transitions, 1887 flow [2025-03-09 06:21:31,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 06:21:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 06:21:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 823 transitions. [2025-03-09 06:21:31,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5621584699453552 [2025-03-09 06:21:31,838 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 708 flow. Second operand 24 states and 823 transitions. [2025-03-09 06:21:31,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 325 transitions, 1887 flow [2025-03-09 06:21:31,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 325 transitions, 1866 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:21:31,856 INFO L231 Difference]: Finished difference. Result has 160 places, 128 transitions, 946 flow [2025-03-09 06:21:31,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=946, PETRI_PLACES=160, PETRI_TRANSITIONS=128} [2025-03-09 06:21:31,857 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 103 predicate places. [2025-03-09 06:21:31,857 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 128 transitions, 946 flow [2025-03-09 06:21:31,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 25.045454545454547) internal successors, (551), 22 states have internal predecessors, (551), 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) [2025-03-09 06:21:31,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:31,857 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:31,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:32,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-09 06:21:32,058 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:32,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1471206961, now seen corresponding path program 1 times [2025-03-09 06:21:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400372783] [2025-03-09 06:21:32,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:32,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:21:32,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:21:32,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:32,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:21:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400372783] [2025-03-09 06:21:32,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400372783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:32,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:32,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210936651] [2025-03-09 06:21:32,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:32,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:32,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:32,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:32,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:32,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:32,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 128 transitions, 946 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2025-03-09 06:21:32,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:32,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:32,796 INFO L124 PetriNetUnfolderBase]: 2424/5412 cut-off events. [2025-03-09 06:21:32,796 INFO L125 PetriNetUnfolderBase]: For 7061/7061 co-relation queries the response was YES. [2025-03-09 06:21:32,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15066 conditions, 5412 events. 2424/5412 cut-off events. For 7061/7061 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 37788 event pairs, 1244 based on Foata normal form. 132/5268 useless extension candidates. Maximal degree in co-relation 14472. Up to 2479 conditions per place. [2025-03-09 06:21:32,824 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 89 selfloop transitions, 26 changer transitions 0/141 dead transitions. [2025-03-09 06:21:32,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 141 transitions, 1204 flow [2025-03-09 06:21:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2025-03-09 06:21:32,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5778688524590164 [2025-03-09 06:21:32,826 INFO L175 Difference]: Start difference. First operand has 160 places, 128 transitions, 946 flow. Second operand 4 states and 141 transitions. [2025-03-09 06:21:32,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 141 transitions, 1204 flow [2025-03-09 06:21:32,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 141 transitions, 1148 flow, removed 5 selfloop flow, removed 14 redundant places. [2025-03-09 06:21:32,852 INFO L231 Difference]: Finished difference. Result has 148 places, 127 transitions, 938 flow [2025-03-09 06:21:32,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=938, PETRI_PLACES=148, PETRI_TRANSITIONS=127} [2025-03-09 06:21:32,853 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 91 predicate places. [2025-03-09 06:21:32,853 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 127 transitions, 938 flow [2025-03-09 06:21:32,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2025-03-09 06:21:32,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:32,854 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] [2025-03-09 06:21:32,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:21:32,854 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:32,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:32,854 INFO L85 PathProgramCache]: Analyzing trace with hash -56729965, now seen corresponding path program 1 times [2025-03-09 06:21:32,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:32,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637653400] [2025-03-09 06:21:32,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:32,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:32,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:21:32,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:21:32,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:32,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637653400] [2025-03-09 06:21:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637653400] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373760502] [2025-03-09 06:21:32,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:32,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:32,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:32,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:32,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:21:33,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:21:33,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:21:33,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:33,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:33,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:21:33,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:33,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373760502] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:33,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:33,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-09 06:21:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672413669] [2025-03-09 06:21:33,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:33,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:21:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:33,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:21:33,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:21:33,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:33,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 127 transitions, 938 flow. Second operand has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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) [2025-03-09 06:21:33,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:33,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:33,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:33,903 INFO L124 PetriNetUnfolderBase]: 2264/5064 cut-off events. [2025-03-09 06:21:33,904 INFO L125 PetriNetUnfolderBase]: For 6779/6779 co-relation queries the response was YES. [2025-03-09 06:21:33,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14434 conditions, 5064 events. 2264/5064 cut-off events. For 6779/6779 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 35631 event pairs, 1052 based on Foata normal form. 36/4854 useless extension candidates. Maximal degree in co-relation 12912. Up to 2097 conditions per place. [2025-03-09 06:21:33,947 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 119 selfloop transitions, 17 changer transitions 0/162 dead transitions. [2025-03-09 06:21:33,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 162 transitions, 1294 flow [2025-03-09 06:21:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:21:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:21:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2025-03-09 06:21:33,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2025-03-09 06:21:33,949 INFO L175 Difference]: Start difference. First operand has 148 places, 127 transitions, 938 flow. Second operand 7 states and 245 transitions. [2025-03-09 06:21:33,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 162 transitions, 1294 flow [2025-03-09 06:21:33,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 162 transitions, 1255 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:21:33,999 INFO L231 Difference]: Finished difference. Result has 155 places, 127 transitions, 970 flow [2025-03-09 06:21:33,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=155, PETRI_TRANSITIONS=127} [2025-03-09 06:21:34,001 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 98 predicate places. [2025-03-09 06:21:34,001 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 127 transitions, 970 flow [2025-03-09 06:21:34,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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) [2025-03-09 06:21:34,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:34,001 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:34,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 06:21:34,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:34,202 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:34,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1945865598, now seen corresponding path program 1 times [2025-03-09 06:21:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093841430] [2025-03-09 06:21:34,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:34,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:34,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 06:21:34,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 06:21:34,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:34,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:36,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:36,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093841430] [2025-03-09 06:21:36,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093841430] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:36,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074221510] [2025-03-09 06:21:36,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:36,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:36,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:36,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:36,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:21:36,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 06:21:36,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 06:21:36,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:36,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:36,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 1899 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-03-09 06:21:36,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:36,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2025-03-09 06:21:36,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:36,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:36,580 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:36,598 INFO L349 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2025-03-09 06:21:36,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 59 [2025-03-09 06:21:36,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:36,634 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:36,635 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:36,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2025-03-09 06:21:36,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:36,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2025-03-09 06:21:36,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:36,742 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 06:21:36,754 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2025-03-09 06:21:36,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2025-03-09 06:21:36,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 06:21:36,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2025-03-09 06:21:36,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:36,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2025-03-09 06:21:36,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:21:36,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-03-09 06:21:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:36,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074221510] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:37,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 31 [2025-03-09 06:21:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017300094] [2025-03-09 06:21:37,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:37,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-09 06:21:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:37,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-09 06:21:37,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2025-03-09 06:21:37,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2025-03-09 06:21:37,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 127 transitions, 970 flow. Second operand has 32 states, 32 states have (on average 24.96875) internal successors, (799), 32 states have internal predecessors, (799), 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) [2025-03-09 06:21:37,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:37,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2025-03-09 06:21:37,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:42,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-03-09 06:21:43,187 INFO L124 PetriNetUnfolderBase]: 1175/2631 cut-off events. [2025-03-09 06:21:43,187 INFO L125 PetriNetUnfolderBase]: For 3012/3012 co-relation queries the response was YES. [2025-03-09 06:21:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7680 conditions, 2631 events. 1175/2631 cut-off events. For 3012/3012 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14302 event pairs, 143 based on Foata normal form. 48/2575 useless extension candidates. Maximal degree in co-relation 7642. Up to 797 conditions per place. [2025-03-09 06:21:43,201 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 209 selfloop transitions, 30 changer transitions 3/263 dead transitions. [2025-03-09 06:21:43,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 263 transitions, 1465 flow [2025-03-09 06:21:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-09 06:21:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-09 06:21:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 768 transitions. [2025-03-09 06:21:43,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5473984319315752 [2025-03-09 06:21:43,203 INFO L175 Difference]: Start difference. First operand has 155 places, 127 transitions, 970 flow. Second operand 23 states and 768 transitions. [2025-03-09 06:21:43,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 263 transitions, 1465 flow [2025-03-09 06:21:43,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 263 transitions, 1338 flow, removed 11 selfloop flow, removed 34 redundant places. [2025-03-09 06:21:43,214 INFO L231 Difference]: Finished difference. Result has 133 places, 92 transitions, 516 flow [2025-03-09 06:21:43,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=516, PETRI_PLACES=133, PETRI_TRANSITIONS=92} [2025-03-09 06:21:43,214 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 76 predicate places. [2025-03-09 06:21:43,214 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 92 transitions, 516 flow [2025-03-09 06:21:43,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 24.96875) internal successors, (799), 32 states have internal predecessors, (799), 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) [2025-03-09 06:21:43,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:43,215 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:43,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:43,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:43,415 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-03-09 06:21:43,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:43,416 INFO L85 PathProgramCache]: Analyzing trace with hash 713407784, now seen corresponding path program 2 times [2025-03-09 06:21:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:43,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283087783] [2025-03-09 06:21:43,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:21:43,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:43,436 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-09 06:21:43,507 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-09 06:21:43,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:21:43,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:46,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:46,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283087783] [2025-03-09 06:21:46,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283087783] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:46,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509384371] [2025-03-09 06:21:46,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:21:46,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:46,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:46,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:46,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:21:46,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-09 06:21:49,398 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-09 06:21:49,398 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:21:49,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:49,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-03-09 06:21:49,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:49,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2025-03-09 06:21:49,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2025-03-09 06:21:49,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2025-03-09 06:21:49,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2025-03-09 06:21:49,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2025-03-09 06:21:49,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2025-03-09 06:21:49,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2025-03-09 06:21:49,894 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2025-03-09 06:21:49,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 49 [2025-03-09 06:21:49,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2025-03-09 06:21:50,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2025-03-09 06:21:50,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2025-03-09 06:21:50,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2025-03-09 06:21:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:50,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:08,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509384371] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:08,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:08,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 41 [2025-03-09 06:22:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49090977] [2025-03-09 06:22:08,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:08,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-09 06:22:08,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:08,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-09 06:22:08,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1402, Unknown=3, NotChecked=0, Total=1806 [2025-03-09 06:22:11,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-03-09 06:22:11,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2025-03-09 06:22:11,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 92 transitions, 516 flow. Second operand has 43 states, 43 states have (on average 21.186046511627907) internal successors, (911), 43 states have internal predecessors, (911), 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) [2025-03-09 06:22:11,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:11,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2025-03-09 06:22:11,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand