./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:13:10,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:13:10,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:13:10,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:13:10,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:13:10,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:13:10,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:13:10,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:13:10,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:13:10,583 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:13:10,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:13:10,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:13:10,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:13:10,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:13:10,584 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:13:10,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:13:10,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:13:10,584 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:13:10,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:13:10,585 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:13:10,586 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:10,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:13:10,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:13:10,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:13:10,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:13:10,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:13:10,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:13:10,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:13:10,587 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2025-02-08 14:13:10,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:13:10,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:13:10,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:13:10,777 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:13:10,778 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:13:10,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2025-02-08 14:13:11,854 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e98486ec/58c6af32ef4a4e5c8c9bd87a8307d266/FLAG4717230f3 [2025-02-08 14:13:12,072 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:13:12,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2025-02-08 14:13:12,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e98486ec/58c6af32ef4a4e5c8c9bd87a8307d266/FLAG4717230f3 [2025-02-08 14:13:12,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e98486ec/58c6af32ef4a4e5c8c9bd87a8307d266 [2025-02-08 14:13:12,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:13:12,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:13:12,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:12,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:13:12,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:13:12,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10898c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12, skipping insertion in model container [2025-02-08 14:13:12,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:13:12,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:12,551 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:13:12,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:12,582 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:13:12,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12 WrapperNode [2025-02-08 14:13:12,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:12,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:12,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:13:12,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:13:12,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,607 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2025-02-08 14:13:12,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:12,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:13:12,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:13:12,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:13:12,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,618 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,630 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 14:13:12,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,642 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:13:12,650 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:13:12,650 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:13:12,650 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:13:12,655 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (1/1) ... [2025-02-08 14:13:12,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:12,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:12,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:13:12,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:13:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:13:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:13:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:13:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:13:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:13:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:13:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:13:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:13:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:13:12,714 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:13:12,800 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:13:12,801 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:13:13,042 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:13:13,042 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:13:13,211 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:13:13,211 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:13:13,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:13 BoogieIcfgContainer [2025-02-08 14:13:13,211 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:13:13,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:13:13,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:13:13,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:13:13,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:13:12" (1/3) ... [2025-02-08 14:13:13,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dbbc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:13, skipping insertion in model container [2025-02-08 14:13:13,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:12" (2/3) ... [2025-02-08 14:13:13,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dbbc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:13, skipping insertion in model container [2025-02-08 14:13:13,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:13" (3/3) ... [2025-02-08 14:13:13,225 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2025-02-08 14:13:13,247 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:13:13,248 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-sorted.wvr.c that has 4 procedures, 68 locations, 1 initial locations, 4 loop locations, and 18 error locations. [2025-02-08 14:13:13,248 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:13:13,312 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:13:13,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 173 flow [2025-02-08 14:13:13,375 INFO L124 PetriNetUnfolderBase]: 9/73 cut-off events. [2025-02-08 14:13:13,379 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:13:13,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 9/73 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 244 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2025-02-08 14:13:13,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 76 transitions, 173 flow [2025-02-08 14:13:13,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 157 flow [2025-02-08 14:13:13,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:13:13,404 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;@779e874f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:13:13,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-02-08 14:13:13,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:13:13,433 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:13:13,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:13:13,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:13,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:13:13,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:13,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash 433779, now seen corresponding path program 1 times [2025-02-08 14:13:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:13,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802556285] [2025-02-08 14:13:13,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:13,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:13:13,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:13:13,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:13,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:13,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802556285] [2025-02-08 14:13:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802556285] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:13,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:13,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949471289] [2025-02-08 14:13:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:13,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:13,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:13,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:13,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:13,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2025-02-08 14:13:13,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:13,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:13,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2025-02-08 14:13:13,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:14,173 INFO L124 PetriNetUnfolderBase]: 2143/4266 cut-off events. [2025-02-08 14:13:14,173 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2025-02-08 14:13:14,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7347 conditions, 4266 events. 2143/4266 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33039 event pairs, 1499 based on Foata normal form. 205/3793 useless extension candidates. Maximal degree in co-relation 6931. Up to 2922 conditions per place. [2025-02-08 14:13:14,239 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 34 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2025-02-08 14:13:14,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 235 flow [2025-02-08 14:13:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2025-02-08 14:13:14,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-02-08 14:13:14,254 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 157 flow. Second operand 4 states and 190 transitions. [2025-02-08 14:13:14,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 235 flow [2025-02-08 14:13:14,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 226 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:14,264 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 173 flow [2025-02-08 14:13:14,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2025-02-08 14:13:14,270 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2025-02-08 14:13:14,271 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 173 flow [2025-02-08 14:13:14,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:14,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:14,272 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:13:14,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:13:14,272 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:14,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash 38176732, now seen corresponding path program 1 times [2025-02-08 14:13:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137833691] [2025-02-08 14:13:14,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:14,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:14,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:14,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:14,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:14,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137833691] [2025-02-08 14:13:14,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137833691] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040731307] [2025-02-08 14:13:14,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:14,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:14,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:14,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:14,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:13:14,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:14,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:14,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:14,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:14,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:14,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:14,499 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:14,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040731307] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:14,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:14,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:13:14,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168614508] [2025-02-08 14:13:14,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:14,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:13:14,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:14,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:13:14,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:13:14,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2025-02-08 14:13:14,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:14,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:14,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2025-02-08 14:13:14,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:14,870 INFO L124 PetriNetUnfolderBase]: 2143/4265 cut-off events. [2025-02-08 14:13:14,870 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-02-08 14:13:14,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7299 conditions, 4265 events. 2143/4265 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33063 event pairs, 1499 based on Foata normal form. 1/3589 useless extension candidates. Maximal degree in co-relation 7272. Up to 2917 conditions per place. [2025-02-08 14:13:14,892 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 30 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2025-02-08 14:13:14,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 243 flow [2025-02-08 14:13:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:13:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:13:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2025-02-08 14:13:14,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2025-02-08 14:13:14,930 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 173 flow. Second operand 6 states and 260 transitions. [2025-02-08 14:13:14,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 243 flow [2025-02-08 14:13:14,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:14,933 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 180 flow [2025-02-08 14:13:14,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2025-02-08 14:13:14,934 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2025-02-08 14:13:14,934 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 180 flow [2025-02-08 14:13:14,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:14,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:14,935 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:13:14,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:15,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:15,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:15,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash 41657319, now seen corresponding path program 1 times [2025-02-08 14:13:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468024508] [2025-02-08 14:13:15,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:15,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:15,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:15,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468024508] [2025-02-08 14:13:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468024508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:15,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:15,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:15,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551628926] [2025-02-08 14:13:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:15,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:15,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:15,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:15,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:15,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2025-02-08 14:13:15,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:15,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2025-02-08 14:13:15,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:15,580 INFO L124 PetriNetUnfolderBase]: 2733/5144 cut-off events. [2025-02-08 14:13:15,581 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-02-08 14:13:15,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9003 conditions, 5144 events. 2733/5144 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 39884 event pairs, 1971 based on Foata normal form. 217/4722 useless extension candidates. Maximal degree in co-relation 8973. Up to 3724 conditions per place. [2025-02-08 14:13:15,615 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 36 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2025-02-08 14:13:15,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 252 flow [2025-02-08 14:13:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2025-02-08 14:13:15,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2025-02-08 14:13:15,620 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 180 flow. Second operand 3 states and 142 transitions. [2025-02-08 14:13:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 252 flow [2025-02-08 14:13:15,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 230 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:15,622 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 158 flow [2025-02-08 14:13:15,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2025-02-08 14:13:15,623 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2025-02-08 14:13:15,624 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 158 flow [2025-02-08 14:13:15,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:15,624 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:13:15,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:13:15,624 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:15,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1183479061, now seen corresponding path program 1 times [2025-02-08 14:13:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:15,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625064138] [2025-02-08 14:13:15,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:15,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:15,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:15,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:15,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625064138] [2025-02-08 14:13:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625064138] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187724509] [2025-02-08 14:13:15,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:15,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:15,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:13:15,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:15,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:15,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:15,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:15,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187724509] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:15,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:15,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:13:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981130147] [2025-02-08 14:13:15,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:15,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:13:15,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:15,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:13:15,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:13:15,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2025-02-08 14:13:15,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 158 flow. Second operand has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:15,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2025-02-08 14:13:15,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:16,185 INFO L124 PetriNetUnfolderBase]: 2146/4206 cut-off events. [2025-02-08 14:13:16,186 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-02-08 14:13:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7253 conditions, 4206 events. 2146/4206 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32100 event pairs, 1499 based on Foata normal form. 3/3605 useless extension candidates. Maximal degree in co-relation 7199. Up to 2924 conditions per place. [2025-02-08 14:13:16,210 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 33 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2025-02-08 14:13:16,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 78 transitions, 286 flow [2025-02-08 14:13:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:13:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:13:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 419 transitions. [2025-02-08 14:13:16,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5513157894736842 [2025-02-08 14:13:16,213 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 158 flow. Second operand 10 states and 419 transitions. [2025-02-08 14:13:16,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 78 transitions, 286 flow [2025-02-08 14:13:16,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:16,216 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 233 flow [2025-02-08 14:13:16,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2025-02-08 14:13:16,217 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2025-02-08 14:13:16,217 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 233 flow [2025-02-08 14:13:16,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:16,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:16,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:16,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:16,422 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:16,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1291377291, now seen corresponding path program 1 times [2025-02-08 14:13:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:16,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238036026] [2025-02-08 14:13:16,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:16,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:16,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:16,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:16,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:16,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238036026] [2025-02-08 14:13:16,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238036026] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:16,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:16,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:13:16,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695611685] [2025-02-08 14:13:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:16,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:16,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:16,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:16,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:16,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2025-02-08 14:13:16,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:16,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2025-02-08 14:13:16,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:16,677 INFO L124 PetriNetUnfolderBase]: 2146/4135 cut-off events. [2025-02-08 14:13:16,677 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2025-02-08 14:13:16,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7206 conditions, 4135 events. 2146/4135 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30987 event pairs, 1499 based on Foata normal form. 181/3782 useless extension candidates. Maximal degree in co-relation 7171. Up to 2930 conditions per place. [2025-02-08 14:13:16,692 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 44 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2025-02-08 14:13:16,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 319 flow [2025-02-08 14:13:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2025-02-08 14:13:16,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2025-02-08 14:13:16,694 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 233 flow. Second operand 3 states and 140 transitions. [2025-02-08 14:13:16,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 319 flow [2025-02-08 14:13:16,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 308 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:16,695 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 220 flow [2025-02-08 14:13:16,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2025-02-08 14:13:16,696 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2025-02-08 14:13:16,696 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 220 flow [2025-02-08 14:13:16,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:16,696 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:16,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:13:16,696 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:16,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash -462287055, now seen corresponding path program 1 times [2025-02-08 14:13:16,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:16,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651926877] [2025-02-08 14:13:16,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:16,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:16,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:16,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:16,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:16,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:16,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651926877] [2025-02-08 14:13:16,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651926877] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:16,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:16,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:16,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067680737] [2025-02-08 14:13:16,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:16,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:16,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:16,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:16,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:16,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2025-02-08 14:13:16,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:16,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2025-02-08 14:13:16,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:17,178 INFO L124 PetriNetUnfolderBase]: 4406/7885 cut-off events. [2025-02-08 14:13:17,179 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-02-08 14:13:17,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14065 conditions, 7885 events. 4406/7885 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 60585 event pairs, 1998 based on Foata normal form. 119/6928 useless extension candidates. Maximal degree in co-relation 14054. Up to 3910 conditions per place. [2025-02-08 14:13:17,205 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 68 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2025-02-08 14:13:17,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 413 flow [2025-02-08 14:13:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2025-02-08 14:13:17,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7543859649122807 [2025-02-08 14:13:17,207 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 220 flow. Second operand 3 states and 172 transitions. [2025-02-08 14:13:17,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 413 flow [2025-02-08 14:13:17,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 100 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:17,211 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 240 flow [2025-02-08 14:13:17,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2025-02-08 14:13:17,212 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2025-02-08 14:13:17,212 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 240 flow [2025-02-08 14:13:17,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:17,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:17,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:17,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:13:17,213 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:17,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1399208140, now seen corresponding path program 1 times [2025-02-08 14:13:17,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:17,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778004717] [2025-02-08 14:13:17,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:17,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:17,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:17,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:17,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:17,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:17,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778004717] [2025-02-08 14:13:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778004717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:17,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:17,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:17,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473907919] [2025-02-08 14:13:17,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:17,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:17,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:17,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:17,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2025-02-08 14:13:17,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:17,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:17,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2025-02-08 14:13:17,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:18,150 INFO L124 PetriNetUnfolderBase]: 7651/13283 cut-off events. [2025-02-08 14:13:18,151 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2025-02-08 14:13:18,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25438 conditions, 13283 events. 7651/13283 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 100472 event pairs, 3373 based on Foata normal form. 170/12274 useless extension candidates. Maximal degree in co-relation 25426. Up to 6900 conditions per place. [2025-02-08 14:13:18,204 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 73 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2025-02-08 14:13:18,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 462 flow [2025-02-08 14:13:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2025-02-08 14:13:18,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7587719298245614 [2025-02-08 14:13:18,208 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 240 flow. Second operand 3 states and 173 transitions. [2025-02-08 14:13:18,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 462 flow [2025-02-08 14:13:18,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 105 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:18,211 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 258 flow [2025-02-08 14:13:18,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2025-02-08 14:13:18,211 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2025-02-08 14:13:18,212 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 258 flow [2025-02-08 14:13:18,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:18,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:18,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:18,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:13:18,212 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:18,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1445997384, now seen corresponding path program 1 times [2025-02-08 14:13:18,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946657624] [2025-02-08 14:13:18,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:18,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:18,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:18,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:18,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:18,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:18,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946657624] [2025-02-08 14:13:18,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946657624] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:18,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:18,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:18,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14651123] [2025-02-08 14:13:18,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:18,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:18,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:18,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:18,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2025-02-08 14:13:18,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:18,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:18,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2025-02-08 14:13:18,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:19,164 INFO L124 PetriNetUnfolderBase]: 8863/14964 cut-off events. [2025-02-08 14:13:19,164 INFO L125 PetriNetUnfolderBase]: For 2959/2959 co-relation queries the response was YES. [2025-02-08 14:13:19,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30436 conditions, 14964 events. 8863/14964 cut-off events. For 2959/2959 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 115255 event pairs, 4001 based on Foata normal form. 398/14273 useless extension candidates. Maximal degree in co-relation 30423. Up to 8234 conditions per place. [2025-02-08 14:13:19,257 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 93 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2025-02-08 14:13:19,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 572 flow [2025-02-08 14:13:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2025-02-08 14:13:19,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7269736842105263 [2025-02-08 14:13:19,258 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 258 flow. Second operand 4 states and 221 transitions. [2025-02-08 14:13:19,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 572 flow [2025-02-08 14:13:19,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 124 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:19,262 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 276 flow [2025-02-08 14:13:19,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2025-02-08 14:13:19,263 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2025-02-08 14:13:19,263 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 276 flow [2025-02-08 14:13:19,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:19,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:19,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:19,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:13:19,263 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:19,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 425778799, now seen corresponding path program 1 times [2025-02-08 14:13:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:19,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038936194] [2025-02-08 14:13:19,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:19,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:19,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:13:19,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:13:19,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:19,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:19,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038936194] [2025-02-08 14:13:19,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038936194] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:19,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:19,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:19,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863638744] [2025-02-08 14:13:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:19,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:19,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:19,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:19,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2025-02-08 14:13:19,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:19,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:19,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2025-02-08 14:13:19,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:20,380 INFO L124 PetriNetUnfolderBase]: 8787/14834 cut-off events. [2025-02-08 14:13:20,380 INFO L125 PetriNetUnfolderBase]: For 6224/6224 co-relation queries the response was YES. [2025-02-08 14:13:20,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32525 conditions, 14834 events. 8787/14834 cut-off events. For 6224/6224 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 110437 event pairs, 3868 based on Foata normal form. 388/14344 useless extension candidates. Maximal degree in co-relation 32510. Up to 8354 conditions per place. [2025-02-08 14:13:20,460 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 98 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2025-02-08 14:13:20,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 129 transitions, 632 flow [2025-02-08 14:13:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2025-02-08 14:13:20,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7335526315789473 [2025-02-08 14:13:20,465 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 276 flow. Second operand 4 states and 223 transitions. [2025-02-08 14:13:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 129 transitions, 632 flow [2025-02-08 14:13:20,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 614 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:20,471 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 291 flow [2025-02-08 14:13:20,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2025-02-08 14:13:20,472 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2025-02-08 14:13:20,472 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 291 flow [2025-02-08 14:13:20,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:20,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:20,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:20,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:13:20,472 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:20,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1522109829, now seen corresponding path program 1 times [2025-02-08 14:13:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:20,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404187201] [2025-02-08 14:13:20,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:20,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:13:20,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:13:20,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:20,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:20,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:20,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404187201] [2025-02-08 14:13:20,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404187201] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:20,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:20,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:20,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079212008] [2025-02-08 14:13:20,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:20,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:20,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:20,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:20,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2025-02-08 14:13:20,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:20,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:20,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2025-02-08 14:13:20,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:22,117 INFO L124 PetriNetUnfolderBase]: 13052/22152 cut-off events. [2025-02-08 14:13:22,117 INFO L125 PetriNetUnfolderBase]: For 11436/11436 co-relation queries the response was YES. [2025-02-08 14:13:22,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49586 conditions, 22152 events. 13052/22152 cut-off events. For 11436/11436 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 175367 event pairs, 5384 based on Foata normal form. 301/20903 useless extension candidates. Maximal degree in co-relation 49569. Up to 10492 conditions per place. [2025-02-08 14:13:22,249 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 74 selfloop transitions, 9 changer transitions 0/112 dead transitions. [2025-02-08 14:13:22,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 563 flow [2025-02-08 14:13:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2025-02-08 14:13:22,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2025-02-08 14:13:22,250 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 291 flow. Second operand 4 states and 208 transitions. [2025-02-08 14:13:22,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 563 flow [2025-02-08 14:13:22,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 112 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:22,260 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 330 flow [2025-02-08 14:13:22,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2025-02-08 14:13:22,260 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2025-02-08 14:13:22,260 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 330 flow [2025-02-08 14:13:22,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:22,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:22,261 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:22,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:13:22,261 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:22,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash -525302258, now seen corresponding path program 1 times [2025-02-08 14:13:22,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:22,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027333122] [2025-02-08 14:13:22,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:22,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:13:22,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:13:22,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:22,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027333122] [2025-02-08 14:13:22,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027333122] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744851388] [2025-02-08 14:13:22,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:22,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:22,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:22,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:13:22,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:13:22,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:13:22,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:22,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:22,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:22,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:13:22,406 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:22,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744851388] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:22,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:22,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2025-02-08 14:13:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640846109] [2025-02-08 14:13:22,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:22,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:22,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:22,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:22,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:13:22,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 76 [2025-02-08 14:13:22,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:22,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:22,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 76 [2025-02-08 14:13:22,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:23,843 INFO L124 PetriNetUnfolderBase]: 11668/20097 cut-off events. [2025-02-08 14:13:23,843 INFO L125 PetriNetUnfolderBase]: For 11280/11280 co-relation queries the response was YES. [2025-02-08 14:13:23,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47231 conditions, 20097 events. 11668/20097 cut-off events. For 11280/11280 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 160511 event pairs, 7760 based on Foata normal form. 1/18890 useless extension candidates. Maximal degree in co-relation 47212. Up to 15006 conditions per place. [2025-02-08 14:13:23,966 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 50 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2025-02-08 14:13:23,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 427 flow [2025-02-08 14:13:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2025-02-08 14:13:23,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2025-02-08 14:13:23,968 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 330 flow. Second operand 3 states and 153 transitions. [2025-02-08 14:13:23,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 427 flow [2025-02-08 14:13:23,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 84 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:23,977 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 323 flow [2025-02-08 14:13:23,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2025-02-08 14:13:23,977 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 22 predicate places. [2025-02-08 14:13:23,978 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 323 flow [2025-02-08 14:13:23,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:23,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:23,978 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:13:23,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:24,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:24,179 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:24,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -125379938, now seen corresponding path program 2 times [2025-02-08 14:13:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374760676] [2025-02-08 14:13:24,180 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:24,186 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:24,192 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:24,192 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:24,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:24,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374760676] [2025-02-08 14:13:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374760676] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075507575] [2025-02-08 14:13:24,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:24,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:24,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:24,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:24,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:13:24,269 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:24,280 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:13:24,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:24,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:24,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:13:24,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:24,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:24,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075507575] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:24,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:24,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:13:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549783675] [2025-02-08 14:13:24,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:24,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:24,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:24,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:24,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2025-02-08 14:13:24,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:24,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:24,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2025-02-08 14:13:24,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:25,586 INFO L124 PetriNetUnfolderBase]: 11668/20096 cut-off events. [2025-02-08 14:13:25,586 INFO L125 PetriNetUnfolderBase]: For 11281/11281 co-relation queries the response was YES. [2025-02-08 14:13:25,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47228 conditions, 20096 events. 11668/20096 cut-off events. For 11281/11281 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 160406 event pairs, 7760 based on Foata normal form. 1/18889 useless extension candidates. Maximal degree in co-relation 47208. Up to 14997 conditions per place. [2025-02-08 14:13:25,693 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 37 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2025-02-08 14:13:25,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 417 flow [2025-02-08 14:13:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2025-02-08 14:13:25,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986842105263158 [2025-02-08 14:13:25,695 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 323 flow. Second operand 4 states and 182 transitions. [2025-02-08 14:13:25,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 417 flow [2025-02-08 14:13:25,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 403 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-02-08 14:13:25,703 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 329 flow [2025-02-08 14:13:25,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2025-02-08 14:13:25,704 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2025-02-08 14:13:25,704 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 329 flow [2025-02-08 14:13:25,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:25,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:25,705 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:25,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:25,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 14:13:25,907 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:25,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash 678547717, now seen corresponding path program 1 times [2025-02-08 14:13:25,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:25,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90212441] [2025-02-08 14:13:25,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:25,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:25,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:13:25,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:13:25,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:25,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:13:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90212441] [2025-02-08 14:13:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90212441] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904829083] [2025-02-08 14:13:25,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:25,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:25,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:25,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:25,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:13:26,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:13:26,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:13:26,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:26,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:26,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 14:13:26,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:26,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:26,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904829083] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:26,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:26,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2025-02-08 14:13:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036845237] [2025-02-08 14:13:26,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:26,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 14:13:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:26,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 14:13:26,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-02-08 14:13:26,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 76 [2025-02-08 14:13:26,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 329 flow. Second operand has 15 states, 15 states have (on average 31.466666666666665) internal successors, (472), 15 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:26,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:26,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 76 [2025-02-08 14:13:26,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:29,252 INFO L124 PetriNetUnfolderBase]: 23899/37058 cut-off events. [2025-02-08 14:13:29,252 INFO L125 PetriNetUnfolderBase]: For 22184/22184 co-relation queries the response was YES. [2025-02-08 14:13:29,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90174 conditions, 37058 events. 23899/37058 cut-off events. For 22184/22184 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 281448 event pairs, 7106 based on Foata normal form. 598/36732 useless extension candidates. Maximal degree in co-relation 90158. Up to 11931 conditions per place. [2025-02-08 14:13:29,483 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 193 selfloop transitions, 20 changer transitions 0/240 dead transitions. [2025-02-08 14:13:29,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 240 transitions, 1319 flow [2025-02-08 14:13:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:13:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:13:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 522 transitions. [2025-02-08 14:13:29,486 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2025-02-08 14:13:29,486 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 329 flow. Second operand 12 states and 522 transitions. [2025-02-08 14:13:29,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 240 transitions, 1319 flow [2025-02-08 14:13:29,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 240 transitions, 1289 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:29,528 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 389 flow [2025-02-08 14:13:29,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=389, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2025-02-08 14:13:29,529 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 29 predicate places. [2025-02-08 14:13:29,529 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 389 flow [2025-02-08 14:13:29,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 31.466666666666665) internal successors, (472), 15 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:29,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:29,529 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:29,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:13:29,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 14:13:29,730 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:29,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:29,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1276121428, now seen corresponding path program 1 times [2025-02-08 14:13:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:29,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387261689] [2025-02-08 14:13:29,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:29,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:29,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:13:29,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:13:29,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:29,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:13:29,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:29,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387261689] [2025-02-08 14:13:29,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387261689] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:29,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:29,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:13:29,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713550656] [2025-02-08 14:13:29,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:29,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:29,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:29,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:29,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:13:29,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2025-02-08 14:13:29,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:29,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:29,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2025-02-08 14:13:29,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:31,923 INFO L124 PetriNetUnfolderBase]: 22935/38088 cut-off events. [2025-02-08 14:13:31,923 INFO L125 PetriNetUnfolderBase]: For 37676/37676 co-relation queries the response was YES. [2025-02-08 14:13:32,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96089 conditions, 38088 events. 22935/38088 cut-off events. For 37676/37676 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 309446 event pairs, 2866 based on Foata normal form. 1584/39284 useless extension candidates. Maximal degree in co-relation 96070. Up to 16680 conditions per place. [2025-02-08 14:13:32,367 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 103 selfloop transitions, 10 changer transitions 0/140 dead transitions. [2025-02-08 14:13:32,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 140 transitions, 877 flow [2025-02-08 14:13:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:13:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:13:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2025-02-08 14:13:32,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6473684210526316 [2025-02-08 14:13:32,373 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 389 flow. Second operand 5 states and 246 transitions. [2025-02-08 14:13:32,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 140 transitions, 877 flow [2025-02-08 14:13:32,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 140 transitions, 841 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 14:13:32,413 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 381 flow [2025-02-08 14:13:32,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2025-02-08 14:13:32,415 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 25 predicate places. [2025-02-08 14:13:32,415 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 381 flow [2025-02-08 14:13:32,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:32,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:32,415 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:32,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:13:32,416 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:32,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1276120435, now seen corresponding path program 1 times [2025-02-08 14:13:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:32,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426854490] [2025-02-08 14:13:32,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:32,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:13:32,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:13:32,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:32,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:32,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:32,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426854490] [2025-02-08 14:13:32,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426854490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:32,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007925272] [2025-02-08 14:13:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:32,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:32,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:32,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:32,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:32,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 76 [2025-02-08 14:13:32,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:32,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:32,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 76 [2025-02-08 14:13:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:34,563 INFO L124 PetriNetUnfolderBase]: 20154/33075 cut-off events. [2025-02-08 14:13:34,563 INFO L125 PetriNetUnfolderBase]: For 37017/37017 co-relation queries the response was YES. [2025-02-08 14:13:34,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86863 conditions, 33075 events. 20154/33075 cut-off events. For 37017/37017 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 262346 event pairs, 6971 based on Foata normal form. 1056/32855 useless extension candidates. Maximal degree in co-relation 86844. Up to 13662 conditions per place. [2025-02-08 14:13:34,745 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 80 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2025-02-08 14:13:34,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 111 transitions, 666 flow [2025-02-08 14:13:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2025-02-08 14:13:34,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2025-02-08 14:13:34,746 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 381 flow. Second operand 4 states and 180 transitions. [2025-02-08 14:13:34,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 111 transitions, 666 flow [2025-02-08 14:13:34,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 632 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 14:13:34,861 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 345 flow [2025-02-08 14:13:34,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2025-02-08 14:13:34,861 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2025-02-08 14:13:34,861 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 345 flow [2025-02-08 14:13:34,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:34,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:34,862 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:34,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:13:34,862 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:34,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash -905058155, now seen corresponding path program 1 times [2025-02-08 14:13:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:34,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896907748] [2025-02-08 14:13:34,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:34,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:13:34,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:13:34,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:34,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:34,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896907748] [2025-02-08 14:13:34,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896907748] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:34,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952111499] [2025-02-08 14:13:34,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:34,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:34,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:34,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:13:34,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:13:34,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:13:34,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:34,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:34,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 14:13:34,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:35,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952111499] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:35,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:35,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2025-02-08 14:13:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168531247] [2025-02-08 14:13:35,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:35,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:13:35,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:35,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:13:35,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:13:35,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2025-02-08 14:13:35,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 345 flow. Second operand has 18 states, 18 states have (on average 30.055555555555557) internal successors, (541), 18 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:35,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:35,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2025-02-08 14:13:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:37,942 INFO L124 PetriNetUnfolderBase]: 22631/35844 cut-off events. [2025-02-08 14:13:37,943 INFO L125 PetriNetUnfolderBase]: For 29238/29238 co-relation queries the response was YES. [2025-02-08 14:13:38,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91285 conditions, 35844 events. 22631/35844 cut-off events. For 29238/29238 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 274135 event pairs, 13974 based on Foata normal form. 76/34735 useless extension candidates. Maximal degree in co-relation 91266. Up to 25339 conditions per place. [2025-02-08 14:13:38,122 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 94 selfloop transitions, 16 changer transitions 9/145 dead transitions. [2025-02-08 14:13:38,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 145 transitions, 828 flow [2025-02-08 14:13:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:13:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:13:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 342 transitions. [2025-02-08 14:13:38,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 14:13:38,123 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 345 flow. Second operand 9 states and 342 transitions. [2025-02-08 14:13:38,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 145 transitions, 828 flow [2025-02-08 14:13:38,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 145 transitions, 820 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:38,169 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 401 flow [2025-02-08 14:13:38,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=401, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2025-02-08 14:13:38,170 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 29 predicate places. [2025-02-08 14:13:38,170 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 401 flow [2025-02-08 14:13:38,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 30.055555555555557) internal successors, (541), 18 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:38,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:38,171 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:38,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:38,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 14:13:38,372 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:38,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:38,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2056436517, now seen corresponding path program 1 times [2025-02-08 14:13:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158645820] [2025-02-08 14:13:38,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:38,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:38,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:13:38,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:13:38,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:38,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:13:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158645820] [2025-02-08 14:13:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158645820] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813248052] [2025-02-08 14:13:38,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:38,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:38,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:38,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:38,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:13:38,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:13:38,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:13:38,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:38,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:38,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 14:13:38,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:38,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:38,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813248052] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:38,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:38,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2025-02-08 14:13:38,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309728334] [2025-02-08 14:13:38,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:38,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 14:13:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:38,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 14:13:38,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:13:39,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 76 [2025-02-08 14:13:39,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 401 flow. Second operand has 24 states, 24 states have (on average 30.833333333333332) internal successors, (740), 24 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:39,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:39,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 76 [2025-02-08 14:13:39,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:42,437 INFO L124 PetriNetUnfolderBase]: 26899/42194 cut-off events. [2025-02-08 14:13:42,437 INFO L125 PetriNetUnfolderBase]: For 37481/37481 co-relation queries the response was YES. [2025-02-08 14:13:42,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110952 conditions, 42194 events. 26899/42194 cut-off events. For 37481/37481 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 328494 event pairs, 3553 based on Foata normal form. 1296/42743 useless extension candidates. Maximal degree in co-relation 110930. Up to 10179 conditions per place. [2025-02-08 14:13:42,718 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 258 selfloop transitions, 28 changer transitions 0/310 dead transitions. [2025-02-08 14:13:42,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 310 transitions, 1835 flow [2025-02-08 14:13:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 14:13:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 14:13:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 720 transitions. [2025-02-08 14:13:42,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5572755417956656 [2025-02-08 14:13:42,720 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 401 flow. Second operand 17 states and 720 transitions. [2025-02-08 14:13:42,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 310 transitions, 1835 flow [2025-02-08 14:13:42,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 310 transitions, 1822 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:13:42,880 INFO L231 Difference]: Finished difference. Result has 112 places, 90 transitions, 472 flow [2025-02-08 14:13:42,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=472, PETRI_PLACES=112, PETRI_TRANSITIONS=90} [2025-02-08 14:13:42,881 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 40 predicate places. [2025-02-08 14:13:42,881 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 90 transitions, 472 flow [2025-02-08 14:13:42,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 30.833333333333332) internal successors, (740), 24 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:42,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:42,881 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:42,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:43,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:43,082 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:43,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1008240847, now seen corresponding path program 1 times [2025-02-08 14:13:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601372419] [2025-02-08 14:13:43,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:43,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:13:43,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:13:43,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:43,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:13:43,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:43,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601372419] [2025-02-08 14:13:43,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601372419] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:43,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100545231] [2025-02-08 14:13:43,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:43,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:43,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:43,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:43,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:13:43,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:13:43,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:13:43,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:43,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:43,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:13:43,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:43,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:43,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100545231] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:43,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:43,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2025-02-08 14:13:43,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497751910] [2025-02-08 14:13:43,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:43,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 14:13:43,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:43,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 14:13:43,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-02-08 14:13:43,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2025-02-08 14:13:43,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 90 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:43,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:43,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2025-02-08 14:13:43,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:49,656 INFO L124 PetriNetUnfolderBase]: 54452/86829 cut-off events. [2025-02-08 14:13:49,656 INFO L125 PetriNetUnfolderBase]: For 115779/115779 co-relation queries the response was YES. [2025-02-08 14:13:50,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238783 conditions, 86829 events. 54452/86829 cut-off events. For 115779/115779 co-relation queries the response was YES. Maximal size of possible extension queue 2060. Compared 727590 event pairs, 16099 based on Foata normal form. 706/84203 useless extension candidates. Maximal degree in co-relation 238759. Up to 27998 conditions per place. [2025-02-08 14:13:50,378 INFO L140 encePairwiseOnDemand]: 64/76 looper letters, 275 selfloop transitions, 21 changer transitions 13/330 dead transitions. [2025-02-08 14:13:50,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 330 transitions, 2459 flow [2025-02-08 14:13:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:13:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:13:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 564 transitions. [2025-02-08 14:13:50,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5708502024291497 [2025-02-08 14:13:50,380 INFO L175 Difference]: Start difference. First operand has 112 places, 90 transitions, 472 flow. Second operand 13 states and 564 transitions. [2025-02-08 14:13:50,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 330 transitions, 2459 flow [2025-02-08 14:13:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 330 transitions, 2293 flow, removed 32 selfloop flow, removed 8 redundant places. [2025-02-08 14:13:50,580 INFO L231 Difference]: Finished difference. Result has 119 places, 89 transitions, 475 flow [2025-02-08 14:13:50,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=475, PETRI_PLACES=119, PETRI_TRANSITIONS=89} [2025-02-08 14:13:50,580 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 47 predicate places. [2025-02-08 14:13:50,580 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 89 transitions, 475 flow [2025-02-08 14:13:50,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:50,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:50,581 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:50,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 14:13:50,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 14:13:50,782 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2025-02-08 14:13:50,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash 520609790, now seen corresponding path program 2 times [2025-02-08 14:13:50,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:50,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433063382] [2025-02-08 14:13:50,782 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:50,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-08 14:13:50,794 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 22 statements. [2025-02-08 14:13:50,795 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:13:50,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 14:13:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433063382] [2025-02-08 14:13:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433063382] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:50,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:50,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:13:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355808700] [2025-02-08 14:13:50,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:50,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:50,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:50,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:13:50,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2025-02-08 14:13:50,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 89 transitions, 475 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 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) [2025-02-08 14:13:50,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:50,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2025-02-08 14:13:50,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand