./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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/chl-array-int-trans.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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:47:17,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:47:17,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:47:17,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:47:17,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:47:17,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:47:17,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:47:17,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:47:17,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:47:17,450 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:47:17,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:47:17,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:47:17,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:47:17,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:47:17,450 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:47:17,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:47:17,451 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:47:17,451 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:17,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:47:17,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:47:17,452 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 -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2025-02-06 18:47:17,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:47:17,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:47:17,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:47:17,738 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:47:17,739 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:47:17,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2025-02-06 18:47:18,985 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b96c94aa/7a33d13dbd08478fa19c36fe8a48564a/FLAG18b24bfd6 [2025-02-06 18:47:19,233 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:47:19,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2025-02-06 18:47:19,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b96c94aa/7a33d13dbd08478fa19c36fe8a48564a/FLAG18b24bfd6 [2025-02-06 18:47:19,277 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b96c94aa/7a33d13dbd08478fa19c36fe8a48564a [2025-02-06 18:47:19,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:47:19,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:47:19,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:19,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:47:19,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:47:19,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cf4d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19, skipping insertion in model container [2025-02-06 18:47:19,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,304 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:47:19,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:19,492 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:47:19,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:19,534 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:47:19,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19 WrapperNode [2025-02-06 18:47:19,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:19,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:19,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:47:19,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:47:19,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,583 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 314 [2025-02-06 18:47:19,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:19,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:47:19,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:47:19,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:47:19,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,618 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-06 18:47:19,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,632 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:47:19,640 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:47:19,640 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:47:19,640 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:47:19,641 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:19,671 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) [2025-02-06 18:47:19,673 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 [2025-02-06 18:47:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:47:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:47:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:47:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:47:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:47:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:47:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:47:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:47:19,695 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:47:19,784 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:47:19,785 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:47:20,288 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:47:20,288 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:47:20,551 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:47:20,553 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:47:20,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:20 BoogieIcfgContainer [2025-02-06 18:47:20,553 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:47:20,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:47:20,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:47:20,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:47:20,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:47:19" (1/3) ... [2025-02-06 18:47:20,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6418d266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:20, skipping insertion in model container [2025-02-06 18:47:20,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (2/3) ... [2025-02-06 18:47:20,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6418d266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:20, skipping insertion in model container [2025-02-06 18:47:20,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:20" (3/3) ... [2025-02-06 18:47:20,564 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2025-02-06 18:47:20,578 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:47:20,579 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-trans.wvr.c that has 4 procedures, 114 locations, 1 initial locations, 6 loop locations, and 36 error locations. [2025-02-06 18:47:20,579 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:47:20,655 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:47:20,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 277 flow [2025-02-06 18:47:20,744 INFO L124 PetriNetUnfolderBase]: 15/125 cut-off events. [2025-02-06 18:47:20,746 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:47:20,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 15/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 512 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2025-02-06 18:47:20,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 128 transitions, 277 flow [2025-02-06 18:47:20,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 123 transitions, 261 flow [2025-02-06 18:47:20,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:47:20,784 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;@2bc6f906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:47:20,784 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2025-02-06 18:47:20,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:47:20,792 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:47:20,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:47:20,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:20,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:47:20,794 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:20,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 899218, now seen corresponding path program 1 times [2025-02-06 18:47:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033435859] [2025-02-06 18:47:20,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:20,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:47:20,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:47:20,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:20,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033435859] [2025-02-06 18:47:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033435859] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:21,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:21,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622615979] [2025-02-06 18:47:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:21,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:21,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:21,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:21,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:21,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 128 [2025-02-06 18:47:21,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 123 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:21,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:21,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 128 [2025-02-06 18:47:21,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:23,086 INFO L124 PetriNetUnfolderBase]: 9931/19487 cut-off events. [2025-02-06 18:47:23,088 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2025-02-06 18:47:23,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32899 conditions, 19487 events. 9931/19487 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 179747 event pairs, 6561 based on Foata normal form. 3/15824 useless extension candidates. Maximal degree in co-relation 31712. Up to 13038 conditions per place. [2025-02-06 18:47:23,302 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 59 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2025-02-06 18:47:23,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 417 flow [2025-02-06 18:47:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2025-02-06 18:47:23,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.662109375 [2025-02-06 18:47:23,320 INFO L175 Difference]: Start difference. First operand has 118 places, 123 transitions, 261 flow. Second operand 4 states and 339 transitions. [2025-02-06 18:47:23,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 417 flow [2025-02-06 18:47:23,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 132 transitions, 408 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:47:23,344 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 340 flow [2025-02-06 18:47:23,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2025-02-06 18:47:23,350 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2025-02-06 18:47:23,351 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 340 flow [2025-02-06 18:47:23,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:23,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:23,352 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:47:23,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:47:23,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:23,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:23,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1019577794, now seen corresponding path program 1 times [2025-02-06 18:47:23,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:23,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576610780] [2025-02-06 18:47:23,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:23,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:23,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:47:23,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:47:23,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:23,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576610780] [2025-02-06 18:47:23,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576610780] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651215861] [2025-02-06 18:47:23,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:23,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:23,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:23,543 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) [2025-02-06 18:47:23,545 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 [2025-02-06 18:47:23,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:47:23,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:47:23,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:23,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:23,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:23,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:23,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:47:23,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651215861] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:23,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:47:23,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:47:23,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857378393] [2025-02-06 18:47:23,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:23,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:47:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:23,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:47:23,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:47:23,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 128 [2025-02-06 18:47:23,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:23,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:23,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 128 [2025-02-06 18:47:23,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:25,414 INFO L124 PetriNetUnfolderBase]: 9931/19484 cut-off events. [2025-02-06 18:47:25,414 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-02-06 18:47:25,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32790 conditions, 19484 events. 9931/19484 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 179904 event pairs, 6561 based on Foata normal form. 3/15826 useless extension candidates. Maximal degree in co-relation 32717. Up to 13023 conditions per place. [2025-02-06 18:47:25,567 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 49 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2025-02-06 18:47:25,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 129 transitions, 460 flow [2025-02-06 18:47:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:47:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:47:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 465 transitions. [2025-02-06 18:47:25,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.60546875 [2025-02-06 18:47:25,574 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 340 flow. Second operand 6 states and 465 transitions. [2025-02-06 18:47:25,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 129 transitions, 460 flow [2025-02-06 18:47:25,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:25,578 INFO L231 Difference]: Finished difference. Result has 121 places, 129 transitions, 362 flow [2025-02-06 18:47:25,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=121, PETRI_TRANSITIONS=129} [2025-02-06 18:47:25,580 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2025-02-06 18:47:25,580 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 129 transitions, 362 flow [2025-02-06 18:47:25,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:25,580 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:25,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:47:25,784 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 [2025-02-06 18:47:25,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:25,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1563114917, now seen corresponding path program 1 times [2025-02-06 18:47:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:25,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994031890] [2025-02-06 18:47:25,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:25,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:25,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:25,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:25,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:26,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994031890] [2025-02-06 18:47:26,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994031890] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:26,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207363422] [2025-02-06 18:47:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:26,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:26,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:26,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:26,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-02-06 18:47:26,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 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) [2025-02-06 18:47:26,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:26,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-02-06 18:47:26,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:28,738 INFO L124 PetriNetUnfolderBase]: 21545/42249 cut-off events. [2025-02-06 18:47:28,739 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2025-02-06 18:47:28,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71045 conditions, 42249 events. 21545/42249 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 432123 event pairs, 14202 based on Foata normal form. 240/34466 useless extension candidates. Maximal degree in co-relation 35711. Up to 14229 conditions per place. [2025-02-06 18:47:29,014 INFO L140 encePairwiseOnDemand]: 120/128 looper letters, 108 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2025-02-06 18:47:29,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 180 transitions, 732 flow [2025-02-06 18:47:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:47:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:47:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2025-02-06 18:47:29,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.69140625 [2025-02-06 18:47:29,019 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 362 flow. Second operand 6 states and 531 transitions. [2025-02-06 18:47:29,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 180 transitions, 732 flow [2025-02-06 18:47:29,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 180 transitions, 680 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-02-06 18:47:29,025 INFO L231 Difference]: Finished difference. Result has 124 places, 132 transitions, 369 flow [2025-02-06 18:47:29,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=124, PETRI_TRANSITIONS=132} [2025-02-06 18:47:29,027 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2025-02-06 18:47:29,027 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 132 transitions, 369 flow [2025-02-06 18:47:29,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 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) [2025-02-06 18:47:29,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:29,028 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:47:29,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:47:29,028 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:29,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1542141323, now seen corresponding path program 1 times [2025-02-06 18:47:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226271784] [2025-02-06 18:47:29,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:29,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:29,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:29,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:29,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:29,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:29,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226271784] [2025-02-06 18:47:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226271784] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153157058] [2025-02-06 18:47:29,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:29,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:29,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:29,144 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) [2025-02-06 18:47:29,147 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 [2025-02-06 18:47:29,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:29,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:29,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:29,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:29,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:29,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:29,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:29,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153157058] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:29,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:29,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:47:29,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131122648] [2025-02-06 18:47:29,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:29,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:47:29,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:29,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:47:29,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:47:29,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 128 [2025-02-06 18:47:29,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 132 transitions, 369 flow. Second operand has 12 states, 12 states have (on average 67.08333333333333) internal successors, (805), 12 states have internal predecessors, (805), 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) [2025-02-06 18:47:29,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:29,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 128 [2025-02-06 18:47:29,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:31,269 INFO L124 PetriNetUnfolderBase]: 19870/38996 cut-off events. [2025-02-06 18:47:31,270 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2025-02-06 18:47:31,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65664 conditions, 38996 events. 19870/38996 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 395101 event pairs, 13122 based on Foata normal form. 12/31684 useless extension candidates. Maximal degree in co-relation 32897. Up to 26067 conditions per place. [2025-02-06 18:47:31,518 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 56 selfloop transitions, 39 changer transitions 0/159 dead transitions. [2025-02-06 18:47:31,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 159 transitions, 694 flow [2025-02-06 18:47:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:47:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:47:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2025-02-06 18:47:31,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5953125 [2025-02-06 18:47:31,523 INFO L175 Difference]: Start difference. First operand has 124 places, 132 transitions, 369 flow. Second operand 10 states and 762 transitions. [2025-02-06 18:47:31,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 159 transitions, 694 flow [2025-02-06 18:47:31,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 159 transitions, 686 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:31,532 INFO L231 Difference]: Finished difference. Result has 135 places, 159 transitions, 624 flow [2025-02-06 18:47:31,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=624, PETRI_PLACES=135, PETRI_TRANSITIONS=159} [2025-02-06 18:47:31,533 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 17 predicate places. [2025-02-06 18:47:31,536 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 159 transitions, 624 flow [2025-02-06 18:47:31,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.08333333333333) internal successors, (805), 12 states have internal predecessors, (805), 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) [2025-02-06 18:47:31,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:31,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:31,547 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 [2025-02-06 18:47:31,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:31,738 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:31,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1211923032, now seen corresponding path program 1 times [2025-02-06 18:47:31,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:31,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909365146] [2025-02-06 18:47:31,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:31,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:47:31,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:47:31,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:31,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:31,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909365146] [2025-02-06 18:47:31,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909365146] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:31,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:31,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:31,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243232995] [2025-02-06 18:47:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:31,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:31,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:31,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:31,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:31,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-02-06 18:47:31,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 159 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2025-02-06 18:47:31,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:31,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-02-06 18:47:31,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:36,250 INFO L124 PetriNetUnfolderBase]: 41670/81500 cut-off events. [2025-02-06 18:47:36,251 INFO L125 PetriNetUnfolderBase]: For 3107/3107 co-relation queries the response was YES. [2025-02-06 18:47:36,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138574 conditions, 81500 events. 41670/81500 cut-off events. For 3107/3107 co-relation queries the response was YES. Maximal size of possible extension queue 3506. Compared 905607 event pairs, 27334 based on Foata normal form. 478/67307 useless extension candidates. Maximal degree in co-relation 138354. Up to 27306 conditions per place. [2025-02-06 18:47:36,705 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 168 selfloop transitions, 4 changer transitions 0/236 dead transitions. [2025-02-06 18:47:36,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 236 transitions, 1308 flow [2025-02-06 18:47:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2025-02-06 18:47:36,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.763671875 [2025-02-06 18:47:36,708 INFO L175 Difference]: Start difference. First operand has 135 places, 159 transitions, 624 flow. Second operand 4 states and 391 transitions. [2025-02-06 18:47:36,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 236 transitions, 1308 flow [2025-02-06 18:47:36,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 236 transitions, 1244 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:36,719 INFO L231 Difference]: Finished difference. Result has 138 places, 160 transitions, 608 flow [2025-02-06 18:47:36,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=608, PETRI_PLACES=138, PETRI_TRANSITIONS=160} [2025-02-06 18:47:36,722 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 20 predicate places. [2025-02-06 18:47:36,722 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 160 transitions, 608 flow [2025-02-06 18:47:36,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2025-02-06 18:47:36,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:36,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:36,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:47:36,723 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:36,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:36,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1086572673, now seen corresponding path program 1 times [2025-02-06 18:47:36,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:36,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200313177] [2025-02-06 18:47:36,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:36,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:36,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:47:36,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:47:36,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:36,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200313177] [2025-02-06 18:47:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200313177] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:36,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:36,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:47:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35036325] [2025-02-06 18:47:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:36,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:36,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:36,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:36,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-02-06 18:47:36,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 160 transitions, 608 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2025-02-06 18:47:36,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:36,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-02-06 18:47:36,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:46,145 INFO L124 PetriNetUnfolderBase]: 86680/168540 cut-off events. [2025-02-06 18:47:46,145 INFO L125 PetriNetUnfolderBase]: For 1066/1066 co-relation queries the response was YES. [2025-02-06 18:47:46,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284443 conditions, 168540 events. 86680/168540 cut-off events. For 1066/1066 co-relation queries the response was YES. Maximal size of possible extension queue 6990. Compared 2026294 event pairs, 57160 based on Foata normal form. 1056/137741 useless extension candidates. Maximal degree in co-relation 284231. Up to 57292 conditions per place. [2025-02-06 18:47:47,388 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 124 selfloop transitions, 15 changer transitions 0/205 dead transitions. [2025-02-06 18:47:47,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 205 transitions, 982 flow [2025-02-06 18:47:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2025-02-06 18:47:47,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2025-02-06 18:47:47,389 INFO L175 Difference]: Start difference. First operand has 138 places, 160 transitions, 608 flow. Second operand 5 states and 455 transitions. [2025-02-06 18:47:47,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 205 transitions, 982 flow [2025-02-06 18:47:47,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 205 transitions, 980 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:47,393 INFO L231 Difference]: Finished difference. Result has 144 places, 161 transitions, 658 flow [2025-02-06 18:47:47,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=658, PETRI_PLACES=144, PETRI_TRANSITIONS=161} [2025-02-06 18:47:47,394 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2025-02-06 18:47:47,394 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 161 transitions, 658 flow [2025-02-06 18:47:47,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2025-02-06 18:47:47,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:47,394 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:47,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:47:47,395 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:47,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash 675986398, now seen corresponding path program 1 times [2025-02-06 18:47:47,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:47,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784738481] [2025-02-06 18:47:47,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:47,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:47,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:47:47,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:47:47,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:47,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784738481] [2025-02-06 18:47:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784738481] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:47,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633212525] [2025-02-06 18:47:47,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:47,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:47,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:47,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:47,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2025-02-06 18:47:47,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 161 transitions, 658 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2025-02-06 18:47:47,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:47,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2025-02-06 18:47:47,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:56,375 INFO L124 PetriNetUnfolderBase]: 84663/164977 cut-off events. [2025-02-06 18:47:56,375 INFO L125 PetriNetUnfolderBase]: For 6372/6372 co-relation queries the response was YES. [2025-02-06 18:47:56,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281017 conditions, 164977 events. 84663/164977 cut-off events. For 6372/6372 co-relation queries the response was YES. Maximal size of possible extension queue 6816. Compared 1979384 event pairs, 55522 based on Foata normal form. 1032/136765 useless extension candidates. Maximal degree in co-relation 280797. Up to 56350 conditions per place. [2025-02-06 18:47:57,477 INFO L140 encePairwiseOnDemand]: 121/128 looper letters, 143 selfloop transitions, 10 changer transitions 0/219 dead transitions. [2025-02-06 18:47:57,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 219 transitions, 1143 flow [2025-02-06 18:47:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 461 transitions. [2025-02-06 18:47:57,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7203125 [2025-02-06 18:47:57,479 INFO L175 Difference]: Start difference. First operand has 144 places, 161 transitions, 658 flow. Second operand 5 states and 461 transitions. [2025-02-06 18:47:57,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 219 transitions, 1143 flow [2025-02-06 18:47:57,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 219 transitions, 1123 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:57,487 INFO L231 Difference]: Finished difference. Result has 148 places, 162 transitions, 678 flow [2025-02-06 18:47:57,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=148, PETRI_TRANSITIONS=162} [2025-02-06 18:47:57,488 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2025-02-06 18:47:57,488 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 162 transitions, 678 flow [2025-02-06 18:47:57,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2025-02-06 18:47:57,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:57,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:57,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:47:57,489 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2025-02-06 18:47:57,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1696326453, now seen corresponding path program 1 times [2025-02-06 18:47:57,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:57,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946832033] [2025-02-06 18:47:57,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:57,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:47:57,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:47:57,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:57,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:57,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946832033] [2025-02-06 18:47:57,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946832033] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94914996] [2025-02-06 18:47:57,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:57,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:57,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:57,646 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) [2025-02-06 18:47:57,648 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 [2025-02-06 18:47:57,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:47:57,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:47:57,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:57,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:57,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:57,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:57,784 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:47:57,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94914996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:57,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:47:57,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-02-06 18:47:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345490888] [2025-02-06 18:47:57,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:57,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:47:57,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:57,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:47:57,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:47:57,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 128 [2025-02-06 18:47:57,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 162 transitions, 678 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2025-02-06 18:47:57,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:57,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 128 [2025-02-06 18:47:57,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand