./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.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-three-array-sum.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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:14:22,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:14:22,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:14:22,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:14:22,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:14:22,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:14:22,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:14:22,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:14:22,694 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:14:22,694 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:14:22,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:14:22,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:14:22,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:14:22,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:14:22,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:14:22,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:14:22,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:14:22,697 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:14:22,697 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:14:22,697 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:14:22,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:14:22,697 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:14:22,697 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:14:22,697 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:14:22,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:14:22,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:14:22,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:14:22,699 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 -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2025-02-08 14:14:22,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:14:22,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:14:22,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:14:22,952 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:14:22,952 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:14:22,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2025-02-08 14:14:24,146 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e40e66441/85801385af724b9a827d0a02a9466340/FLAGed054fa34 [2025-02-08 14:14:24,341 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:14:24,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2025-02-08 14:14:24,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e40e66441/85801385af724b9a827d0a02a9466340/FLAGed054fa34 [2025-02-08 14:14:24,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e40e66441/85801385af724b9a827d0a02a9466340 [2025-02-08 14:14:24,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:14:24,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:14:24,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:14:24,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:14:24,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:14:24,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0ef583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24, skipping insertion in model container [2025-02-08 14:14:24,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:14:24,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:14:24,578 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:14:24,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:14:24,620 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:14:24,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24 WrapperNode [2025-02-08 14:14:24,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:14:24,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:14:24,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:14:24,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:14:24,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,654 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 137 [2025-02-08 14:14:24,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:14:24,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:14:24,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:14:24,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:14:24,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,679 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-02-08 14:14:24,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,690 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:14:24,699 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:14:24,699 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:14:24,699 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:14:24,700 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (1/1) ... [2025-02-08 14:14:24,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:14:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:24,736 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 14:14:24,741 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 14:14:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:14:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:14:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:14:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:14:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:14:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:14:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:14:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:14:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:14:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:14:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:14:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:14:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:14:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:14:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:14:24,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:14:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:14:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:14:24,760 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 14:14:24,846 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:14:24,848 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:14:25,118 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:14:25,118 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:14:25,307 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:14:25,308 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:14:25,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:14:25 BoogieIcfgContainer [2025-02-08 14:14:25,309 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:14:25,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:14:25,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:14:25,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:14:25,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:14:24" (1/3) ... [2025-02-08 14:14:25,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6913a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:14:25, skipping insertion in model container [2025-02-08 14:14:25,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:14:24" (2/3) ... [2025-02-08 14:14:25,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6913a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:14:25, skipping insertion in model container [2025-02-08 14:14:25,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:14:25" (3/3) ... [2025-02-08 14:14:25,318 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2025-02-08 14:14:25,332 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:14:25,334 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-three-array-sum.wvr.c that has 4 procedures, 57 locations, 1 initial locations, 6 loop locations, and 14 error locations. [2025-02-08 14:14:25,334 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:14:25,395 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:14:25,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 147 flow [2025-02-08 14:14:25,456 INFO L124 PetriNetUnfolderBase]: 7/60 cut-off events. [2025-02-08 14:14:25,460 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:14:25,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 7/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-08 14:14:25,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 147 flow [2025-02-08 14:14:25,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 131 flow [2025-02-08 14:14:25,478 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:14:25,487 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;@30c1ca5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:14:25,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-08 14:14:25,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:14:25,494 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:14:25,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:14:25,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:25,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:14:25,495 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:25,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash 525558, now seen corresponding path program 1 times [2025-02-08 14:14:25,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:25,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779337761] [2025-02-08 14:14:25,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:25,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:14:25,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:14:25,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:25,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:25,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779337761] [2025-02-08 14:14:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779337761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:25,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:25,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302582652] [2025-02-08 14:14:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:25,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:25,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:25,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:25,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-02-08 14:14:25,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 14:14:25,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:25,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-02-08 14:14:25,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:26,058 INFO L124 PetriNetUnfolderBase]: 830/1555 cut-off events. [2025-02-08 14:14:26,059 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-02-08 14:14:26,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 1555 events. 830/1555 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8959 event pairs, 594 based on Foata normal form. 3/1239 useless extension candidates. Maximal degree in co-relation 2466. Up to 1126 conditions per place. [2025-02-08 14:14:26,075 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 38 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2025-02-08 14:14:26,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 245 flow [2025-02-08 14:14:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2025-02-08 14:14:26,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2025-02-08 14:14:26,085 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 131 flow. Second operand 4 states and 142 transitions. [2025-02-08 14:14:26,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 245 flow [2025-02-08 14:14:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 236 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:14:26,092 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 210 flow [2025-02-08 14:14:26,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2025-02-08 14:14:26,097 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2025-02-08 14:14:26,097 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 210 flow [2025-02-08 14:14:26,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 14:14:26,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:26,097 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:14:26,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:14:26,098 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:26,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1522542309, now seen corresponding path program 1 times [2025-02-08 14:14:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:26,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409051257] [2025-02-08 14:14:26,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:26,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:14:26,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:14:26,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:26,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:26,215 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 14:14:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409051257] [2025-02-08 14:14:26,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409051257] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536062250] [2025-02-08 14:14:26,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:26,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:26,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:26,218 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 14:14:26,220 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 14:14:26,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:14:26,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:14:26,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:26,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:26,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:14:26,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:26,305 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 14:14:26,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536062250] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:26,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:26,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:14:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147285448] [2025-02-08 14:14:26,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:26,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:26,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:26,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:14:26,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-02-08 14:14:26,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 14:14:26,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:26,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-02-08 14:14:26,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:26,556 INFO L124 PetriNetUnfolderBase]: 830/1552 cut-off events. [2025-02-08 14:14:26,556 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2025-02-08 14:14:26,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 1552 events. 830/1552 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8910 event pairs, 594 based on Foata normal form. 3/1241 useless extension candidates. Maximal degree in co-relation 2699. Up to 1111 conditions per place. [2025-02-08 14:14:26,566 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 28 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2025-02-08 14:14:26,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 288 flow [2025-02-08 14:14:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2025-02-08 14:14:26,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-08 14:14:26,568 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 210 flow. Second operand 6 states and 180 transitions. [2025-02-08 14:14:26,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 288 flow [2025-02-08 14:14:26,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:14:26,570 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 232 flow [2025-02-08 14:14:26,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2025-02-08 14:14:26,570 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2025-02-08 14:14:26,570 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 232 flow [2025-02-08 14:14:26,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 14:14:26,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:26,571 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:14:26,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:14:26,771 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 14:14:26,771 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:26,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash 45829106, now seen corresponding path program 1 times [2025-02-08 14:14:26,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:26,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782067069] [2025-02-08 14:14:26,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:26,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:26,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:14:26,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:14:26,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:26,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:26,886 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 14:14:26,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782067069] [2025-02-08 14:14:26,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782067069] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908475873] [2025-02-08 14:14:26,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:26,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:26,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:26,888 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 14:14:26,890 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 14:14:26,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:14:26,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:14:26,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:26,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:26,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:14:26,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:26,970 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 14:14:26,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:27,005 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 14:14:27,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908475873] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:27,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:14:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939574562] [2025-02-08 14:14:27,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:27,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:14:27,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:27,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:14:27,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:14:27,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-02-08 14:14:27,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 14:14:27,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:27,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-02-08 14:14:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:27,350 INFO L124 PetriNetUnfolderBase]: 839/1588 cut-off events. [2025-02-08 14:14:27,351 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-02-08 14:14:27,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2913 conditions, 1588 events. 839/1588 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9263 event pairs, 594 based on Foata normal form. 9/1283 useless extension candidates. Maximal degree in co-relation 2701. Up to 1126 conditions per place. [2025-02-08 14:14:27,361 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 35 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2025-02-08 14:14:27,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 550 flow [2025-02-08 14:14:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:14:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:14:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 301 transitions. [2025-02-08 14:14:27,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2025-02-08 14:14:27,364 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 232 flow. Second operand 10 states and 301 transitions. [2025-02-08 14:14:27,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 550 flow [2025-02-08 14:14:27,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 467 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-02-08 14:14:27,371 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 447 flow [2025-02-08 14:14:27,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2025-02-08 14:14:27,372 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2025-02-08 14:14:27,372 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 447 flow [2025-02-08 14:14:27,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 14:14:27,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:27,372 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:27,379 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 14:14:27,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:27,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:27,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1001920412, now seen corresponding path program 1 times [2025-02-08 14:14:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172656266] [2025-02-08 14:14:27,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:27,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:14:27,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:14:27,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:27,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:27,656 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 14:14:27,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:27,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172656266] [2025-02-08 14:14:27,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172656266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:27,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:27,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:27,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801599417] [2025-02-08 14:14:27,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:27,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:27,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:27,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:27,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:27,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-02-08 14:14:27,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 14:14:27,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:27,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-02-08 14:14:27,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:27,975 INFO L124 PetriNetUnfolderBase]: 1719/2967 cut-off events. [2025-02-08 14:14:27,976 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-02-08 14:14:27,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5527 conditions, 2967 events. 1719/2967 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18077 event pairs, 914 based on Foata normal form. 86/2415 useless extension candidates. Maximal degree in co-relation 5429. Up to 1771 conditions per place. [2025-02-08 14:14:27,994 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 102 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2025-02-08 14:14:27,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 735 flow [2025-02-08 14:14:27,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2025-02-08 14:14:27,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2025-02-08 14:14:27,997 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 447 flow. Second operand 4 states and 176 transitions. [2025-02-08 14:14:27,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 735 flow [2025-02-08 14:14:27,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 126 transitions, 698 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:28,001 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 439 flow [2025-02-08 14:14:28,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=439, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2025-02-08 14:14:28,002 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2025-02-08 14:14:28,002 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 439 flow [2025-02-08 14:14:28,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 14:14:28,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:28,002 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:28,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:14:28,002 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:28,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash -817031755, now seen corresponding path program 1 times [2025-02-08 14:14:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235000483] [2025-02-08 14:14:28,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:28,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:14:28,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:14:28,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:28,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:28,063 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 14:14:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235000483] [2025-02-08 14:14:28,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235000483] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:28,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:28,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:14:28,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125527800] [2025-02-08 14:14:28,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:28,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:14:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:28,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:14:28,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:14:28,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-02-08 14:14:28,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 14:14:28,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:28,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-02-08 14:14:28,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:28,381 INFO L124 PetriNetUnfolderBase]: 1837/3533 cut-off events. [2025-02-08 14:14:28,381 INFO L125 PetriNetUnfolderBase]: For 1123/1257 co-relation queries the response was YES. [2025-02-08 14:14:28,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 3533 events. 1837/3533 cut-off events. For 1123/1257 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 24137 event pairs, 910 based on Foata normal form. 0/3013 useless extension candidates. Maximal degree in co-relation 7151. Up to 1831 conditions per place. [2025-02-08 14:14:28,399 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 88 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2025-02-08 14:14:28,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 681 flow [2025-02-08 14:14:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:14:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:14:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2025-02-08 14:14:28,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-02-08 14:14:28,400 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 439 flow. Second operand 3 states and 135 transitions. [2025-02-08 14:14:28,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 681 flow [2025-02-08 14:14:28,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 113 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:28,404 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 457 flow [2025-02-08 14:14:28,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=76, PETRI_TRANSITIONS=96} [2025-02-08 14:14:28,404 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2025-02-08 14:14:28,405 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 457 flow [2025-02-08 14:14:28,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 14:14:28,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:28,405 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:28,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:14:28,405 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:28,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1812203692, now seen corresponding path program 1 times [2025-02-08 14:14:28,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:28,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751143938] [2025-02-08 14:14:28,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:28,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:28,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:14:28,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:14:28,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:28,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:14:28,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751143938] [2025-02-08 14:14:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751143938] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:28,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207614426] [2025-02-08 14:14:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:28,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:28,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:28,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:28,500 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-02-08 14:14:28,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 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 14:14:28,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:28,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-02-08 14:14:28,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:28,901 INFO L124 PetriNetUnfolderBase]: 2634/4911 cut-off events. [2025-02-08 14:14:28,901 INFO L125 PetriNetUnfolderBase]: For 2093/2125 co-relation queries the response was YES. [2025-02-08 14:14:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11096 conditions, 4911 events. 2634/4911 cut-off events. For 2093/2125 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 33151 event pairs, 1634 based on Foata normal form. 114/4469 useless extension candidates. Maximal degree in co-relation 10942. Up to 2382 conditions per place. [2025-02-08 14:14:28,930 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 121 selfloop transitions, 24 changer transitions 0/167 dead transitions. [2025-02-08 14:14:28,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 167 transitions, 1065 flow [2025-02-08 14:14:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2025-02-08 14:14:28,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6878306878306878 [2025-02-08 14:14:28,932 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 457 flow. Second operand 6 states and 260 transitions. [2025-02-08 14:14:28,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 167 transitions, 1065 flow [2025-02-08 14:14:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 167 transitions, 1056 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:14:28,945 INFO L231 Difference]: Finished difference. Result has 83 places, 106 transitions, 592 flow [2025-02-08 14:14:28,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=592, PETRI_PLACES=83, PETRI_TRANSITIONS=106} [2025-02-08 14:14:28,946 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2025-02-08 14:14:28,946 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 106 transitions, 592 flow [2025-02-08 14:14:28,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 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 14:14:28,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:28,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:28,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:14:28,947 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:28,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash 811517529, now seen corresponding path program 1 times [2025-02-08 14:14:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828402929] [2025-02-08 14:14:28,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:28,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:28,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:14:28,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:14:28,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:28,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:29,016 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 14:14:29,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:29,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828402929] [2025-02-08 14:14:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828402929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:29,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264462668] [2025-02-08 14:14:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:29,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:29,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:29,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:29,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-02-08 14:14:29,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 106 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 14:14:29,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:29,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-02-08 14:14:29,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:29,511 INFO L124 PetriNetUnfolderBase]: 3936/6834 cut-off events. [2025-02-08 14:14:29,512 INFO L125 PetriNetUnfolderBase]: For 4589/4645 co-relation queries the response was YES. [2025-02-08 14:14:29,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6834 events. 3936/6834 cut-off events. For 4589/4645 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 44586 event pairs, 2320 based on Foata normal form. 276/6653 useless extension candidates. Maximal degree in co-relation 16646. Up to 4201 conditions per place. [2025-02-08 14:14:29,545 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 121 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2025-02-08 14:14:29,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 144 transitions, 992 flow [2025-02-08 14:14:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2025-02-08 14:14:29,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:14:29,546 INFO L175 Difference]: Start difference. First operand has 83 places, 106 transitions, 592 flow. Second operand 4 states and 168 transitions. [2025-02-08 14:14:29,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 144 transitions, 992 flow [2025-02-08 14:14:29,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 144 transitions, 988 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-08 14:14:29,555 INFO L231 Difference]: Finished difference. Result has 88 places, 107 transitions, 609 flow [2025-02-08 14:14:29,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=88, PETRI_TRANSITIONS=107} [2025-02-08 14:14:29,555 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2025-02-08 14:14:29,555 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 107 transitions, 609 flow [2025-02-08 14:14:29,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 14:14:29,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:29,556 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:29,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:14:29,556 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:29,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash -451701566, now seen corresponding path program 1 times [2025-02-08 14:14:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:29,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451357813] [2025-02-08 14:14:29,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:29,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:14:29,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:14:29,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:29,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:29,614 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 14:14:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451357813] [2025-02-08 14:14:29,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451357813] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:29,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318866915] [2025-02-08 14:14:29,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:29,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:29,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:29,617 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 14:14:29,618 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 14:14:29,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:14:29,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:14:29,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:29,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:29,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:14:29,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:14:29,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:29,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318866915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:29,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:29,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2025-02-08 14:14:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459730566] [2025-02-08 14:14:29,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:29,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:29,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:29,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:29,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:14:29,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-02-08 14:14:29,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 107 transitions, 609 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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 14:14:29,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:29,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-02-08 14:14:29,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:30,181 INFO L124 PetriNetUnfolderBase]: 2595/4548 cut-off events. [2025-02-08 14:14:30,182 INFO L125 PetriNetUnfolderBase]: For 4111/4329 co-relation queries the response was YES. [2025-02-08 14:14:30,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11703 conditions, 4548 events. 2595/4548 cut-off events. For 4111/4329 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 27102 event pairs, 1818 based on Foata normal form. 41/4180 useless extension candidates. Maximal degree in co-relation 11539. Up to 3098 conditions per place. [2025-02-08 14:14:30,211 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 107 selfloop transitions, 24 changer transitions 2/155 dead transitions. [2025-02-08 14:14:30,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 155 transitions, 1100 flow [2025-02-08 14:14:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2025-02-08 14:14:30,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-02-08 14:14:30,213 INFO L175 Difference]: Start difference. First operand has 88 places, 107 transitions, 609 flow. Second operand 6 states and 246 transitions. [2025-02-08 14:14:30,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 155 transitions, 1100 flow [2025-02-08 14:14:30,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 1090 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:30,223 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 679 flow [2025-02-08 14:14:30,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2025-02-08 14:14:30,225 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2025-02-08 14:14:30,225 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 679 flow [2025-02-08 14:14:30,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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 14:14:30,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:30,226 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:14:30,232 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 14:14:30,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:30,427 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:30,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1931237303, now seen corresponding path program 2 times [2025-02-08 14:14:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322211450] [2025-02-08 14:14:30,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:30,438 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:14:30,443 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:14:30,444 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:30,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:14:30,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322211450] [2025-02-08 14:14:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322211450] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685448135] [2025-02-08 14:14:30,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:30,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:30,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:30,482 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 14:14:30,484 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 14:14:30,525 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:14:30,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:14:30,532 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:30,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:30,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:14:30,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:14:30,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:14:30,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685448135] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:30,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:30,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:14:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122426847] [2025-02-08 14:14:30,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:30,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:30,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:30,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:30,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-02-08 14:14:30,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 679 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 14:14:30,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:30,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-02-08 14:14:30,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:30,851 INFO L124 PetriNetUnfolderBase]: 2117/4176 cut-off events. [2025-02-08 14:14:30,851 INFO L125 PetriNetUnfolderBase]: For 3896/3912 co-relation queries the response was YES. [2025-02-08 14:14:30,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11088 conditions, 4176 events. 2117/4176 cut-off events. For 3896/3912 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 28082 event pairs, 1638 based on Foata normal form. 1/3872 useless extension candidates. Maximal degree in co-relation 10919. Up to 3010 conditions per place. [2025-02-08 14:14:30,873 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 72 selfloop transitions, 16 changer transitions 0/108 dead transitions. [2025-02-08 14:14:30,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 108 transitions, 845 flow [2025-02-08 14:14:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-02-08 14:14:30,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2025-02-08 14:14:30,874 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 679 flow. Second operand 4 states and 124 transitions. [2025-02-08 14:14:30,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 108 transitions, 845 flow [2025-02-08 14:14:30,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 108 transitions, 809 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:30,881 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 665 flow [2025-02-08 14:14:30,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2025-02-08 14:14:30,882 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2025-02-08 14:14:30,882 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 665 flow [2025-02-08 14:14:30,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 14:14:30,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:30,882 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:30,890 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 14:14:31,087 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,SelfDestructingSolverStorable8 [2025-02-08 14:14:31,087 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:31,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1057684895, now seen corresponding path program 1 times [2025-02-08 14:14:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375009281] [2025-02-08 14:14:31,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:31,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:14:31,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:14:31,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:31,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:31,147 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 14:14:31,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375009281] [2025-02-08 14:14:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375009281] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:31,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:31,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062070172] [2025-02-08 14:14:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:31,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:31,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:31,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:31,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:31,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-02-08 14:14:31,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 665 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 14:14:31,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:31,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-02-08 14:14:31,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:31,654 INFO L124 PetriNetUnfolderBase]: 4660/8047 cut-off events. [2025-02-08 14:14:31,654 INFO L125 PetriNetUnfolderBase]: For 8398/8695 co-relation queries the response was YES. [2025-02-08 14:14:31,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21092 conditions, 8047 events. 4660/8047 cut-off events. For 8398/8695 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 52079 event pairs, 2213 based on Foata normal form. 127/7390 useless extension candidates. Maximal degree in co-relation 20925. Up to 4089 conditions per place. [2025-02-08 14:14:31,697 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 135 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2025-02-08 14:14:31,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 157 transitions, 1181 flow [2025-02-08 14:14:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2025-02-08 14:14:31,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2025-02-08 14:14:31,699 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 665 flow. Second operand 4 states and 169 transitions. [2025-02-08 14:14:31,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 157 transitions, 1181 flow [2025-02-08 14:14:31,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 157 transitions, 1149 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:31,707 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 655 flow [2025-02-08 14:14:31,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=655, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2025-02-08 14:14:31,708 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2025-02-08 14:14:31,708 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 655 flow [2025-02-08 14:14:31,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 14:14:31,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:31,709 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-08 14:14:31,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:14:31,709 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:31,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash -732672877, now seen corresponding path program 1 times [2025-02-08 14:14:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580025421] [2025-02-08 14:14:31,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:31,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:14:31,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:14:31,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:31,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-08 14:14:31,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:31,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580025421] [2025-02-08 14:14:31,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580025421] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:31,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:31,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858989711] [2025-02-08 14:14:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:31,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:31,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:31,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:31,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:31,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-02-08 14:14:31,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 655 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 14:14:31,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:31,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-02-08 14:14:31,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:32,220 INFO L124 PetriNetUnfolderBase]: 3223/6049 cut-off events. [2025-02-08 14:14:32,220 INFO L125 PetriNetUnfolderBase]: For 6185/6489 co-relation queries the response was YES. [2025-02-08 14:14:32,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16538 conditions, 6049 events. 3223/6049 cut-off events. For 6185/6489 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 41657 event pairs, 2480 based on Foata normal form. 102/5685 useless extension candidates. Maximal degree in co-relation 16434. Up to 4498 conditions per place. [2025-02-08 14:14:32,250 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 65 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2025-02-08 14:14:32,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 749 flow [2025-02-08 14:14:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2025-02-08 14:14:32,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2025-02-08 14:14:32,252 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 655 flow. Second operand 4 states and 158 transitions. [2025-02-08 14:14:32,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 749 flow [2025-02-08 14:14:32,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 104 transitions, 735 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:32,260 INFO L231 Difference]: Finished difference. Result has 96 places, 104 transitions, 612 flow [2025-02-08 14:14:32,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=612, PETRI_PLACES=96, PETRI_TRANSITIONS=104} [2025-02-08 14:14:32,261 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2025-02-08 14:14:32,261 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 612 flow [2025-02-08 14:14:32,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 14:14:32,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:32,261 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:32,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:14:32,262 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:32,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:32,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1088924321, now seen corresponding path program 1 times [2025-02-08 14:14:32,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:32,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356910962] [2025-02-08 14:14:32,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:32,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:32,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:14:32,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:14:32,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:32,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:32,338 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 14:14:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:32,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356910962] [2025-02-08 14:14:32,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356910962] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:32,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110567938] [2025-02-08 14:14:32,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:32,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:32,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:32,341 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 14:14:32,342 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 14:14:32,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:14:32,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:14:32,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:32,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:32,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:14:32,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:14:32,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:32,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110567938] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:32,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:32,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:14:32,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792442740] [2025-02-08 14:14:32,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:32,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:14:32,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:32,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:14:32,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:14:32,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-02-08 14:14:32,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 612 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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 14:14:32,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:32,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-02-08 14:14:32,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:32,958 INFO L124 PetriNetUnfolderBase]: 3645/6017 cut-off events. [2025-02-08 14:14:32,958 INFO L125 PetriNetUnfolderBase]: For 4919/5321 co-relation queries the response was YES. [2025-02-08 14:14:32,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16694 conditions, 6017 events. 3645/6017 cut-off events. For 4919/5321 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 36594 event pairs, 925 based on Foata normal form. 277/5762 useless extension candidates. Maximal degree in co-relation 16588. Up to 1856 conditions per place. [2025-02-08 14:14:32,992 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 151 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2025-02-08 14:14:32,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 181 transitions, 1218 flow [2025-02-08 14:14:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2025-02-08 14:14:32,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2025-02-08 14:14:32,997 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 612 flow. Second operand 6 states and 258 transitions. [2025-02-08 14:14:32,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 181 transitions, 1218 flow [2025-02-08 14:14:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 181 transitions, 1186 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:33,010 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 594 flow [2025-02-08 14:14:33,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=594, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2025-02-08 14:14:33,010 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2025-02-08 14:14:33,010 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 594 flow [2025-02-08 14:14:33,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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 14:14:33,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:33,011 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:33,017 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 14:14:33,211 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,SelfDestructingSolverStorable11 [2025-02-08 14:14:33,211 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:33,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1040153592, now seen corresponding path program 1 times [2025-02-08 14:14:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:33,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450118650] [2025-02-08 14:14:33,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:33,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:14:33,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:14:33,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:33,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:33,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450118650] [2025-02-08 14:14:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450118650] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943162300] [2025-02-08 14:14:33,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:33,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:33,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:33,376 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 14:14:33,383 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 14:14:33,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:14:33,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:14:33,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:33,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:33,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 14:14:33,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-08 14:14:33,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-08 14:14:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943162300] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:33,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2025-02-08 14:14:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530810216] [2025-02-08 14:14:33,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:33,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 14:14:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:33,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 14:14:33,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-02-08 14:14:33,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-02-08 14:14:33,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 594 flow. Second operand has 21 states, 21 states have (on average 23.285714285714285) internal successors, (489), 21 states have internal predecessors, (489), 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 14:14:33,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:33,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-02-08 14:14:33,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:34,764 INFO L124 PetriNetUnfolderBase]: 6245/11378 cut-off events. [2025-02-08 14:14:34,764 INFO L125 PetriNetUnfolderBase]: For 16175/16704 co-relation queries the response was YES. [2025-02-08 14:14:34,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32109 conditions, 11378 events. 6245/11378 cut-off events. For 16175/16704 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 82214 event pairs, 4602 based on Foata normal form. 96/10517 useless extension candidates. Maximal degree in co-relation 32003. Up to 4469 conditions per place. [2025-02-08 14:14:34,822 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 68 selfloop transitions, 52 changer transitions 0/140 dead transitions. [2025-02-08 14:14:34,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 140 transitions, 1023 flow [2025-02-08 14:14:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:14:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:14:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2025-02-08 14:14:34,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2025-02-08 14:14:34,824 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 594 flow. Second operand 12 states and 352 transitions. [2025-02-08 14:14:34,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 140 transitions, 1023 flow [2025-02-08 14:14:34,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 140 transitions, 971 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 14:14:34,840 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 730 flow [2025-02-08 14:14:34,840 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=730, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2025-02-08 14:14:34,840 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2025-02-08 14:14:34,841 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 730 flow [2025-02-08 14:14:34,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 23.285714285714285) internal successors, (489), 21 states have internal predecessors, (489), 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 14:14:34,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:34,841 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:34,847 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 14:14:35,041 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,SelfDestructingSolverStorable12 [2025-02-08 14:14:35,042 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:35,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:35,042 INFO L85 PathProgramCache]: Analyzing trace with hash 603084909, now seen corresponding path program 1 times [2025-02-08 14:14:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:35,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591759407] [2025-02-08 14:14:35,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:35,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:35,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:14:35,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:14:35,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:35,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:14:35,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591759407] [2025-02-08 14:14:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591759407] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023349123] [2025-02-08 14:14:35,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:35,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:35,112 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 14:14:35,114 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 14:14:35,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:14:35,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:14:35,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:35,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:35,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:14:35,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:14:35,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:14:35,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023349123] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:35,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:35,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:14:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416394075] [2025-02-08 14:14:35,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:35,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:14:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:35,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:14:35,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:14:35,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-02-08 14:14:35,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 730 flow. Second operand has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 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 14:14:35,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:35,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-02-08 14:14:35,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:36,876 INFO L124 PetriNetUnfolderBase]: 12837/20655 cut-off events. [2025-02-08 14:14:36,877 INFO L125 PetriNetUnfolderBase]: For 16925/18239 co-relation queries the response was YES. [2025-02-08 14:14:36,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52423 conditions, 20655 events. 12837/20655 cut-off events. For 16925/18239 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 142854 event pairs, 2771 based on Foata normal form. 1304/19948 useless extension candidates. Maximal degree in co-relation 52306. Up to 8012 conditions per place. [2025-02-08 14:14:37,054 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 238 selfloop transitions, 15 changer transitions 0/274 dead transitions. [2025-02-08 14:14:37,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 274 transitions, 1828 flow [2025-02-08 14:14:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:14:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:14:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2025-02-08 14:14:37,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6936507936507936 [2025-02-08 14:14:37,057 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 730 flow. Second operand 10 states and 437 transitions. [2025-02-08 14:14:37,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 274 transitions, 1828 flow [2025-02-08 14:14:37,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 274 transitions, 1721 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-02-08 14:14:37,077 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 701 flow [2025-02-08 14:14:37,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=701, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2025-02-08 14:14:37,079 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2025-02-08 14:14:37,079 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 701 flow [2025-02-08 14:14:37,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 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 14:14:37,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:37,080 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2025-02-08 14:14:37,088 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 14:14:37,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:37,281 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:37,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash 100652659, now seen corresponding path program 2 times [2025-02-08 14:14:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:37,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948508733] [2025-02-08 14:14:37,281 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:37,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:37,292 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-08 14:14:37,299 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-02-08 14:14:37,302 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:37,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-08 14:14:37,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948508733] [2025-02-08 14:14:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948508733] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830377597] [2025-02-08 14:14:37,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:37,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:37,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:37,345 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 14:14:37,347 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 14:14:37,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-08 14:14:37,405 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-02-08 14:14:37,405 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:37,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:37,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:14:37,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-08 14:14:37,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-08 14:14:37,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830377597] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:37,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:14:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974207333] [2025-02-08 14:14:37,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:37,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:37,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:37,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:37,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:37,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-02-08 14:14:37,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 701 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 14:14:37,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:37,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-02-08 14:14:37,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:38,763 INFO L124 PetriNetUnfolderBase]: 11997/19999 cut-off events. [2025-02-08 14:14:38,763 INFO L125 PetriNetUnfolderBase]: For 24759/26151 co-relation queries the response was YES. [2025-02-08 14:14:38,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57768 conditions, 19999 events. 11997/19999 cut-off events. For 24759/26151 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 144382 event pairs, 8898 based on Foata normal form. 380/19325 useless extension candidates. Maximal degree in co-relation 57668. Up to 16218 conditions per place. [2025-02-08 14:14:38,913 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 55 selfloop transitions, 43 changer transitions 0/118 dead transitions. [2025-02-08 14:14:38,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 118 transitions, 877 flow [2025-02-08 14:14:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:14:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:14:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-02-08 14:14:38,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2025-02-08 14:14:38,914 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 701 flow. Second operand 5 states and 145 transitions. [2025-02-08 14:14:38,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 118 transitions, 877 flow [2025-02-08 14:14:38,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 830 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-08 14:14:38,966 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 720 flow [2025-02-08 14:14:38,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2025-02-08 14:14:38,966 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2025-02-08 14:14:38,967 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 720 flow [2025-02-08 14:14:38,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 14:14:38,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:38,967 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:38,973 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 14:14:39,167 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,SelfDestructingSolverStorable14 [2025-02-08 14:14:39,167 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:39,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash -956542988, now seen corresponding path program 1 times [2025-02-08 14:14:39,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220515933] [2025-02-08 14:14:39,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:39,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:39,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:14:39,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:14:39,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:39,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:39,232 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 14:14:39,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220515933] [2025-02-08 14:14:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220515933] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244115373] [2025-02-08 14:14:39,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:39,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:39,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:39,235 INFO L229 MonitoredProcess]: Starting monitored process 10 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 14:14:39,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 14:14:39,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:14:39,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:14:39,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:39,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:39,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:14:39,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:14:39,319 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:14:39,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244115373] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:39,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:14:39,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-02-08 14:14:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052723610] [2025-02-08 14:14:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:39,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:39,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:39,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:39,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:14:39,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2025-02-08 14:14:39,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 720 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 14:14:39,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:39,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2025-02-08 14:14:39,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:41,299 INFO L124 PetriNetUnfolderBase]: 17675/26742 cut-off events. [2025-02-08 14:14:41,299 INFO L125 PetriNetUnfolderBase]: For 27268/29020 co-relation queries the response was YES. [2025-02-08 14:14:41,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75818 conditions, 26742 events. 17675/26742 cut-off events. For 27268/29020 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 175314 event pairs, 2680 based on Foata normal form. 906/26874 useless extension candidates. Maximal degree in co-relation 55640. Up to 10062 conditions per place. [2025-02-08 14:14:41,560 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 146 selfloop transitions, 9 changer transitions 0/170 dead transitions. [2025-02-08 14:14:41,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 170 transitions, 1264 flow [2025-02-08 14:14:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-02-08 14:14:41,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2025-02-08 14:14:41,561 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 720 flow. Second operand 4 states and 159 transitions. [2025-02-08 14:14:41,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 170 transitions, 1264 flow [2025-02-08 14:14:41,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 170 transitions, 1186 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:41,623 INFO L231 Difference]: Finished difference. Result has 101 places, 116 transitions, 652 flow [2025-02-08 14:14:41,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=652, PETRI_PLACES=101, PETRI_TRANSITIONS=116} [2025-02-08 14:14:41,623 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2025-02-08 14:14:41,623 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 116 transitions, 652 flow [2025-02-08 14:14:41,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 14:14:41,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:41,623 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:41,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 14:14:41,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:41,824 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:41,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -956542987, now seen corresponding path program 1 times [2025-02-08 14:14:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665622620] [2025-02-08 14:14:41,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:41,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:14:41,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:14:41,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:41,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:41,913 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 14:14:41,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665622620] [2025-02-08 14:14:41,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665622620] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024585201] [2025-02-08 14:14:41,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:41,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:41,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:41,916 INFO L229 MonitoredProcess]: Starting monitored process 11 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 14:14:41,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:14:41,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:14:41,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:14:41,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:41,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:42,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:42,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:42,023 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 14:14:42,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:42,046 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 14:14:42,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024585201] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:42,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:42,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:14:42,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582294733] [2025-02-08 14:14:42,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:42,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:14:42,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:42,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:14:42,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:14:42,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-02-08 14:14:42,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 116 transitions, 652 flow. Second operand has 10 states, 10 states have (on average 27.7) internal successors, (277), 10 states have internal predecessors, (277), 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 14:14:42,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:42,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-02-08 14:14:42,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:44,690 INFO L124 PetriNetUnfolderBase]: 21415/34352 cut-off events. [2025-02-08 14:14:44,690 INFO L125 PetriNetUnfolderBase]: For 43275/45271 co-relation queries the response was YES. [2025-02-08 14:14:44,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99461 conditions, 34352 events. 21415/34352 cut-off events. For 43275/45271 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 248406 event pairs, 3774 based on Foata normal form. 1950/35421 useless extension candidates. Maximal degree in co-relation 73051. Up to 9071 conditions per place. [2025-02-08 14:14:44,967 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 227 selfloop transitions, 12 changer transitions 0/255 dead transitions. [2025-02-08 14:14:44,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 255 transitions, 1744 flow [2025-02-08 14:14:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:14:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:14:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2025-02-08 14:14:44,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-02-08 14:14:44,969 INFO L175 Difference]: Start difference. First operand has 101 places, 116 transitions, 652 flow. Second operand 7 states and 287 transitions. [2025-02-08 14:14:44,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 255 transitions, 1744 flow [2025-02-08 14:14:45,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 255 transitions, 1718 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:45,062 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 705 flow [2025-02-08 14:14:45,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=705, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2025-02-08 14:14:45,062 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 47 predicate places. [2025-02-08 14:14:45,062 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 705 flow [2025-02-08 14:14:45,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.7) internal successors, (277), 10 states have internal predecessors, (277), 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 14:14:45,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:45,063 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:45,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 14:14:45,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 14:14:45,263 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:45,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -27669249, now seen corresponding path program 1 times [2025-02-08 14:14:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926592371] [2025-02-08 14:14:45,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:45,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:14:45,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:14:45,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:45,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:14:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926592371] [2025-02-08 14:14:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926592371] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:45,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:45,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:14:45,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980142166] [2025-02-08 14:14:45,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:45,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:14:45,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:45,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:14:45,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:14:45,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-02-08 14:14:45,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 705 flow. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 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 14:14:45,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:45,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-02-08 14:14:45,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:47,945 INFO L124 PetriNetUnfolderBase]: 19101/30385 cut-off events. [2025-02-08 14:14:47,945 INFO L125 PetriNetUnfolderBase]: For 59357/60365 co-relation queries the response was YES. [2025-02-08 14:14:48,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94138 conditions, 30385 events. 19101/30385 cut-off events. For 59357/60365 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 217576 event pairs, 13134 based on Foata normal form. 160/28107 useless extension candidates. Maximal degree in co-relation 68325. Up to 24487 conditions per place. [2025-02-08 14:14:48,183 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 76 selfloop transitions, 15 changer transitions 28/138 dead transitions. [2025-02-08 14:14:48,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 138 transitions, 1017 flow [2025-02-08 14:14:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:14:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:14:48,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2025-02-08 14:14:48,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-02-08 14:14:48,184 INFO L175 Difference]: Start difference. First operand has 108 places, 121 transitions, 705 flow. Second operand 6 states and 228 transitions. [2025-02-08 14:14:48,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 138 transitions, 1017 flow [2025-02-08 14:14:48,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 998 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:48,262 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 630 flow [2025-02-08 14:14:48,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2025-02-08 14:14:48,263 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 52 predicate places. [2025-02-08 14:14:48,263 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 630 flow [2025-02-08 14:14:48,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 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 14:14:48,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:48,263 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:48,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 14:14:48,263 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:48,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1028192507, now seen corresponding path program 2 times [2025-02-08 14:14:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:48,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399749940] [2025-02-08 14:14:48,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:48,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:48,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:14:48,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 30 statements. [2025-02-08 14:14:48,277 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:48,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-08 14:14:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399749940] [2025-02-08 14:14:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399749940] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243765324] [2025-02-08 14:14:48,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:48,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:48,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:48,302 INFO L229 MonitoredProcess]: Starting monitored process 12 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 14:14:48,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:14:48,356 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:14:48,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 30 statements. [2025-02-08 14:14:48,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:48,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:48,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:14:48,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-08 14:14:48,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-08 14:14:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243765324] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:48,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:14:48,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816818297] [2025-02-08 14:14:48,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:48,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:48,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:48,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:48,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:48,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-02-08 14:14:48,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 630 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 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 14:14:48,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:48,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-02-08 14:14:48,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:50,458 INFO L124 PetriNetUnfolderBase]: 15629/24846 cut-off events. [2025-02-08 14:14:50,459 INFO L125 PetriNetUnfolderBase]: For 41006/42156 co-relation queries the response was YES. [2025-02-08 14:14:50,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74067 conditions, 24846 events. 15629/24846 cut-off events. For 41006/42156 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 174982 event pairs, 6264 based on Foata normal form. 644/24517 useless extension candidates. Maximal degree in co-relation 54967. Up to 12853 conditions per place. [2025-02-08 14:14:50,752 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 101 selfloop transitions, 11 changer transitions 0/131 dead transitions. [2025-02-08 14:14:50,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 131 transitions, 950 flow [2025-02-08 14:14:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-02-08 14:14:50,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-02-08 14:14:50,758 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 630 flow. Second operand 4 states and 152 transitions. [2025-02-08 14:14:50,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 131 transitions, 950 flow [2025-02-08 14:14:50,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 131 transitions, 858 flow, removed 12 selfloop flow, removed 14 redundant places. [2025-02-08 14:14:50,900 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 556 flow [2025-02-08 14:14:50,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=556, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2025-02-08 14:14:50,900 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2025-02-08 14:14:50,901 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 556 flow [2025-02-08 14:14:50,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 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 14:14:50,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:50,901 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:50,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 14:14:51,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:51,105 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:51,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1201592463, now seen corresponding path program 1 times [2025-02-08 14:14:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:51,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832393849] [2025-02-08 14:14:51,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:51,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 14:14:51,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 14:14:51,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:51,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:14:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832393849] [2025-02-08 14:14:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832393849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:51,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163250936] [2025-02-08 14:14:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:51,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:51,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:51,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:51,172 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-02-08 14:14:51,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 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 14:14:51,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:51,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-02-08 14:14:51,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:53,280 INFO L124 PetriNetUnfolderBase]: 19761/31200 cut-off events. [2025-02-08 14:14:53,280 INFO L125 PetriNetUnfolderBase]: For 44475/45423 co-relation queries the response was YES. [2025-02-08 14:14:53,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91891 conditions, 31200 events. 19761/31200 cut-off events. For 44475/45423 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 219963 event pairs, 6296 based on Foata normal form. 854/31429 useless extension candidates. Maximal degree in co-relation 52918. Up to 12416 conditions per place. [2025-02-08 14:14:53,494 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 136 selfloop transitions, 10 changer transitions 0/161 dead transitions. [2025-02-08 14:14:53,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 161 transitions, 1082 flow [2025-02-08 14:14:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2025-02-08 14:14:53,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-02-08 14:14:53,496 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 556 flow. Second operand 4 states and 162 transitions. [2025-02-08 14:14:53,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 161 transitions, 1082 flow [2025-02-08 14:14:53,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1016 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:14:53,621 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 557 flow [2025-02-08 14:14:53,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=557, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2025-02-08 14:14:53,622 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2025-02-08 14:14:53,622 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 557 flow [2025-02-08 14:14:53,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 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 14:14:53,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:53,622 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:53,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 14:14:53,622 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:53,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash 297073452, now seen corresponding path program 1 times [2025-02-08 14:14:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71903401] [2025-02-08 14:14:53,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:53,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:53,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:14:53,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:14:53,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:53,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:14:53,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:53,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71903401] [2025-02-08 14:14:53,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71903401] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:53,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996237780] [2025-02-08 14:14:53,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:53,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:53,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:53,676 INFO L229 MonitoredProcess]: Starting monitored process 13 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 14:14:53,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 14:14:53,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:14:53,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:14:53,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:53,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:53,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:14:53,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:14:53,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:14:53,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996237780] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:53,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:53,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-02-08 14:14:53,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120229882] [2025-02-08 14:14:53,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:53,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 14:14:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:53,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 14:14:53,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-08 14:14:54,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2025-02-08 14:14:54,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 557 flow. Second operand has 19 states, 19 states have (on average 21.31578947368421) internal successors, (405), 19 states have internal predecessors, (405), 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 14:14:54,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:54,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2025-02-08 14:14:54,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:56,587 INFO L124 PetriNetUnfolderBase]: 19691/29185 cut-off events. [2025-02-08 14:14:56,587 INFO L125 PetriNetUnfolderBase]: For 60122/60122 co-relation queries the response was YES. [2025-02-08 14:14:56,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90652 conditions, 29185 events. 19691/29185 cut-off events. For 60122/60122 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 186939 event pairs, 1894 based on Foata normal form. 251/25052 useless extension candidates. Maximal degree in co-relation 54679. Up to 4359 conditions per place. [2025-02-08 14:14:56,789 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 342 selfloop transitions, 54 changer transitions 26/435 dead transitions. [2025-02-08 14:14:56,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 435 transitions, 3153 flow [2025-02-08 14:14:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 14:14:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 14:14:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 539 transitions. [2025-02-08 14:14:56,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2025-02-08 14:14:56,795 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 557 flow. Second operand 19 states and 539 transitions. [2025-02-08 14:14:56,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 435 transitions, 3153 flow [2025-02-08 14:14:56,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 435 transitions, 3048 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-02-08 14:14:56,875 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 671 flow [2025-02-08 14:14:56,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=671, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2025-02-08 14:14:56,876 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2025-02-08 14:14:56,876 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 671 flow [2025-02-08 14:14:56,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.31578947368421) internal successors, (405), 19 states have internal predecessors, (405), 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 14:14:56,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:56,876 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:56,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 14:14:57,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:57,077 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:57,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash 615863477, now seen corresponding path program 2 times [2025-02-08 14:14:57,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:57,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977321536] [2025-02-08 14:14:57,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:57,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:57,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-08 14:14:57,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 34 statements. [2025-02-08 14:14:57,092 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:57,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 14:14:57,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:57,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977321536] [2025-02-08 14:14:57,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977321536] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:57,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91379756] [2025-02-08 14:14:57,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:14:57,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:57,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:57,121 INFO L229 MonitoredProcess]: Starting monitored process 14 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 14:14:57,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 14:14:57,181 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-08 14:14:57,196 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 34 statements. [2025-02-08 14:14:57,196 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:14:57,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:57,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:14:57,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 14:14:57,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 14:14:57,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91379756] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:57,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:14:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573523881] [2025-02-08 14:14:57,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:57,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:57,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:57,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:57,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:57,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-02-08 14:14:57,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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 14:14:57,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:57,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-02-08 14:14:57,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:59,019 INFO L124 PetriNetUnfolderBase]: 17580/28759 cut-off events. [2025-02-08 14:14:59,019 INFO L125 PetriNetUnfolderBase]: For 38235/38235 co-relation queries the response was YES. [2025-02-08 14:14:59,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83285 conditions, 28759 events. 17580/28759 cut-off events. For 38235/38235 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 205394 event pairs, 4819 based on Foata normal form. 448/26103 useless extension candidates. Maximal degree in co-relation 51678. Up to 13688 conditions per place. [2025-02-08 14:14:59,141 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 100 selfloop transitions, 7 changer transitions 22/145 dead transitions. [2025-02-08 14:14:59,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 1052 flow [2025-02-08 14:14:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:14:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:14:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-02-08 14:14:59,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-08 14:14:59,142 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 671 flow. Second operand 4 states and 156 transitions. [2025-02-08 14:14:59,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 1052 flow [2025-02-08 14:14:59,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 145 transitions, 939 flow, removed 2 selfloop flow, removed 13 redundant places. [2025-02-08 14:14:59,234 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 501 flow [2025-02-08 14:14:59,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=501, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2025-02-08 14:14:59,235 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2025-02-08 14:14:59,235 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 501 flow [2025-02-08 14:14:59,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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 14:14:59,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:59,235 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:59,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 14:14:59,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:59,435 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:14:59,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 473203013, now seen corresponding path program 1 times [2025-02-08 14:14:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:59,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50353584] [2025-02-08 14:14:59,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:59,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:59,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 14:14:59,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 14:14:59,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:59,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-08 14:14:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50353584] [2025-02-08 14:14:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50353584] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:14:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919352845] [2025-02-08 14:14:59,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:59,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:14:59,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:14:59,520 INFO L229 MonitoredProcess]: Starting monitored process 15 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 14:14:59,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 14:14:59,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 14:14:59,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 14:14:59,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:59,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:59,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:14:59,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-08 14:14:59,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-08 14:14:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919352845] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:59,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:59,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:14:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527879870] [2025-02-08 14:14:59,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:59,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:14:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:59,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:14:59,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:14:59,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-02-08 14:14:59,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 501 flow. Second operand has 12 states, 12 states have (on average 28.166666666666668) internal successors, (338), 12 states have internal predecessors, (338), 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 14:14:59,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:59,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-02-08 14:14:59,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:02,019 INFO L124 PetriNetUnfolderBase]: 17180/27065 cut-off events. [2025-02-08 14:15:02,019 INFO L125 PetriNetUnfolderBase]: For 59822/60381 co-relation queries the response was YES. [2025-02-08 14:15:02,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78906 conditions, 27065 events. 17180/27065 cut-off events. For 59822/60381 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 179048 event pairs, 3283 based on Foata normal form. 678/24507 useless extension candidates. Maximal degree in co-relation 78718. Up to 6482 conditions per place. [2025-02-08 14:15:02,222 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 328 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2025-02-08 14:15:02,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 352 transitions, 2501 flow [2025-02-08 14:15:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:15:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:15:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 389 transitions. [2025-02-08 14:15:02,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6174603174603175 [2025-02-08 14:15:02,223 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 501 flow. Second operand 10 states and 389 transitions. [2025-02-08 14:15:02,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 352 transitions, 2501 flow [2025-02-08 14:15:02,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 352 transitions, 2452 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 14:15:02,262 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 556 flow [2025-02-08 14:15:02,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=556, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2025-02-08 14:15:02,262 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 34 predicate places. [2025-02-08 14:15:02,262 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 556 flow [2025-02-08 14:15:02,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.166666666666668) internal successors, (338), 12 states have internal predecessors, (338), 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 14:15:02,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:02,263 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:02,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 14:15:02,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-08 14:15:02,463 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:15:02,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1884883163, now seen corresponding path program 2 times [2025-02-08 14:15:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319611842] [2025-02-08 14:15:02,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:15:02,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:02,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-02-08 14:15:02,487 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 67 statements. [2025-02-08 14:15:02,487 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:15:02,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-08 14:15:02,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:02,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319611842] [2025-02-08 14:15:02,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319611842] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:02,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350476468] [2025-02-08 14:15:02,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:15:02,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:02,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:02,536 INFO L229 MonitoredProcess]: Starting monitored process 16 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 14:15:02,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 14:15:02,602 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-02-08 14:15:02,624 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 67 statements. [2025-02-08 14:15:02,624 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:15:02,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:02,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:15:02,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-08 14:15:02,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:15:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-08 14:15:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350476468] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:15:02,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:15:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:15:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141078064] [2025-02-08 14:15:02,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:15:02,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:15:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:02,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:15:02,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:15:02,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2025-02-08 14:15:02,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 556 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 14:15:02,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:02,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2025-02-08 14:15:02,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:04,738 INFO L124 PetriNetUnfolderBase]: 20104/31525 cut-off events. [2025-02-08 14:15:04,738 INFO L125 PetriNetUnfolderBase]: For 64309/64968 co-relation queries the response was YES. [2025-02-08 14:15:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93572 conditions, 31525 events. 20104/31525 cut-off events. For 64309/64968 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 213408 event pairs, 2767 based on Foata normal form. 226/28001 useless extension candidates. Maximal degree in co-relation 93382. Up to 15816 conditions per place. [2025-02-08 14:15:04,881 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 0 selfloop transitions, 0 changer transitions 164/164 dead transitions. [2025-02-08 14:15:04,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 164 transitions, 1158 flow [2025-02-08 14:15:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:15:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:15:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-02-08 14:15:04,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5587301587301587 [2025-02-08 14:15:04,882 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 556 flow. Second operand 5 states and 176 transitions. [2025-02-08 14:15:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 164 transitions, 1158 flow [2025-02-08 14:15:04,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 164 transitions, 1138 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-02-08 14:15:04,935 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2025-02-08 14:15:04,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2025-02-08 14:15:04,935 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2025-02-08 14:15:04,935 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2025-02-08 14:15:04,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 14:15:04,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-02-08 14:15:04,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-02-08 14:15:04,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 14:15:05,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 14:15:05,139 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:05,142 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:15:05,143 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:15:05,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:15:05 BasicIcfg [2025-02-08 14:15:05,149 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:15:05,149 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:15:05,149 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:15:05,149 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:15:05,150 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:14:25" (3/4) ... [2025-02-08 14:15:05,151 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:15:05,152 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 14:15:05,152 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 14:15:05,152 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-02-08 14:15:05,155 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2025-02-08 14:15:05,156 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2025-02-08 14:15:05,156 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-02-08 14:15:05,156 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 14:15:05,224 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:15:05,224 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:15:05,224 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:15:05,225 INFO L158 Benchmark]: Toolchain (without parser) took 40808.28ms. Allocated memory was 167.8MB in the beginning and 11.9GB in the end (delta: 11.7GB). Free memory was 124.7MB in the beginning and 8.7GB in the end (delta: -8.6GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2025-02-08 14:15:05,225 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:15:05,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.03ms. Allocated memory is still 167.8MB. Free memory was 124.7MB in the beginning and 112.5MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:05,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.60ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 111.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:15:05,225 INFO L158 Benchmark]: Boogie Preprocessor took 43.10ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 108.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:05,226 INFO L158 Benchmark]: IcfgBuilder took 610.83ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 59.7MB in the end (delta: 48.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-08 14:15:05,226 INFO L158 Benchmark]: TraceAbstraction took 39837.33ms. Allocated memory was 167.8MB in the beginning and 11.9GB in the end (delta: 11.7GB). Free memory was 59.0MB in the beginning and 8.7GB in the end (delta: -8.7GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2025-02-08 14:15:05,226 INFO L158 Benchmark]: Witness Printer took 75.27ms. Allocated memory is still 11.9GB. Free memory was 8.7GB in the beginning and 8.7GB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:05,228 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.03ms. Allocated memory is still 167.8MB. Free memory was 124.7MB in the beginning and 112.5MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.60ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 111.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.10ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 108.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 610.83ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 59.7MB in the end (delta: 48.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 39837.33ms. Allocated memory was 167.8MB in the beginning and 11.9GB in the end (delta: 11.7GB). Free memory was 59.0MB in the beginning and 8.7GB in the end (delta: -8.7GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. * Witness Printer took 75.27ms. Allocated memory is still 11.9GB. Free memory was 8.7GB in the beginning and 8.7GB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 90 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.7s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 32.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1855 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1709 mSDsluCounter, 1053 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 998 mSDsCounter, 292 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6486 IncrementalHoareTripleChecker+Invalid, 6778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 292 mSolverCounterUnsat, 55 mSDtfsCounter, 6486 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 628 SyntacticMatches, 8 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730occurred in iteration=13, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 899 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1167 ConstructedInterpolants, 0 QuantifiedInterpolants, 2933 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2418 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 50 InterpolantComputations, 13 PerfectInterpolantSequences, 716/951 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:15:05,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE