./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-channel-sum.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/popl20-channel-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 bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:51:37,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:51:37,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:51:37,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:51:37,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:51:37,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:51:37,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:51:37,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:51:37,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:51:37,658 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:51:37,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:51:37,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:51:37,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:51:37,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:51:37,659 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:51:37,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:51:37,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:51:37,659 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:51:37,660 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:51:37,661 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:51:37,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:51:37,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:51:37,661 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 -> bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 [2025-02-06 18:51:37,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:51:37,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:51:37,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:51:37,900 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:51:37,900 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:51:37,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-02-06 18:51:39,071 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9316f647e/0558a4701a974ff3b223254e0e69a3b4/FLAG3cb88ce47 [2025-02-06 18:51:39,292 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:51:39,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-02-06 18:51:39,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9316f647e/0558a4701a974ff3b223254e0e69a3b4/FLAG3cb88ce47 [2025-02-06 18:51:39,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9316f647e/0558a4701a974ff3b223254e0e69a3b4 [2025-02-06 18:51:39,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:51:39,650 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:51:39,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:51:39,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:51:39,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:51:39,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fba53af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39, skipping insertion in model container [2025-02-06 18:51:39,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:51:39,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:51:39,802 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:51:39,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:51:39,834 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:51:39,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39 WrapperNode [2025-02-06 18:51:39,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:51:39,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:51:39,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:51:39,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:51:39,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,866 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 140 [2025-02-06 18:51:39,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:51:39,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:51:39,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:51:39,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:51:39,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,901 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 18:51:39,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,905 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:51:39,917 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:51:39,917 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:51:39,917 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:51:39,918 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (1/1) ... [2025-02-06 18:51:39,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:51:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:39,948 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 18:51:39,951 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 18:51:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:51:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:51:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:51:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:51:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:51:39,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:51:39,971 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 18:51:40,040 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:51:40,041 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:51:40,252 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:51:40,252 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:51:40,379 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:51:40,379 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:51:40,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:51:40 BoogieIcfgContainer [2025-02-06 18:51:40,379 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:51:40,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:51:40,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:51:40,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:51:40,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:51:39" (1/3) ... [2025-02-06 18:51:40,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383e8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:51:40, skipping insertion in model container [2025-02-06 18:51:40,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:39" (2/3) ... [2025-02-06 18:51:40,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383e8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:51:40, skipping insertion in model container [2025-02-06 18:51:40,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:51:40" (3/3) ... [2025-02-06 18:51:40,389 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2025-02-06 18:51:40,399 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:51:40,400 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-channel-sum.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-02-06 18:51:40,400 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:51:40,446 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:51:40,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-02-06 18:51:40,491 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-02-06 18:51:40,493 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:51:40,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-06 18:51:40,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-02-06 18:51:40,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-02-06 18:51:40,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:51:40,510 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;@72b6d7b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:51:40,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 18:51:40,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:51:40,513 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2025-02-06 18:51:40,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:51:40,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:40,514 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:40,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:40,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1862209293, now seen corresponding path program 1 times [2025-02-06 18:51:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521277214] [2025-02-06 18:51:40,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:40,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:40,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:51:40,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:51:40,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:40,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:40,729 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 18:51:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521277214] [2025-02-06 18:51:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521277214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:40,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:51:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509256415] [2025-02-06 18:51:40,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:40,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:51:40,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:40,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:51:40,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:51:40,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:51:40,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 18:51:40,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:40,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:51:40,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:40,946 INFO L124 PetriNetUnfolderBase]: 368/632 cut-off events. [2025-02-06 18:51:40,946 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-02-06 18:51:40,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 632 events. 368/632 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2860 event pairs, 277 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1131. Up to 570 conditions per place. [2025-02-06 18:51:40,952 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2025-02-06 18:51:40,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 173 flow [2025-02-06 18:51:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:51:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:51:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-06 18:51:40,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.453125 [2025-02-06 18:51:40,965 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 87 transitions. [2025-02-06 18:51:40,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 173 flow [2025-02-06 18:51:40,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:51:40,969 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 119 flow [2025-02-06 18:51:40,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2025-02-06 18:51:40,973 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-02-06 18:51:40,973 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 119 flow [2025-02-06 18:51:40,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 18:51:40,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:40,973 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:40,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:51:40,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:40,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1015842694, now seen corresponding path program 1 times [2025-02-06 18:51:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16611764] [2025-02-06 18:51:40,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:40,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:51:40,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:51:40,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:40,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:41,079 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 18:51:41,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16611764] [2025-02-06 18:51:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16611764] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991344751] [2025-02-06 18:51:41,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:41,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:41,082 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 18:51:41,083 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 18:51:41,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:51:41,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:51:41,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:41,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:41,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:51:41,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:41,181 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 18:51:41,182 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:51:41,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991344751] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:41,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:51:41,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:51:41,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424028577] [2025-02-06 18:51:41,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:41,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:51:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:41,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:51:41,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:51:41,192 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:51:41,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 18:51:41,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:41,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:51:41,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:41,362 INFO L124 PetriNetUnfolderBase]: 368/631 cut-off events. [2025-02-06 18:51:41,362 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 18:51:41,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 631 events. 368/631 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2888 event pairs, 277 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1205. Up to 565 conditions per place. [2025-02-06 18:51:41,366 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 28 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2025-02-06 18:51:41,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 185 flow [2025-02-06 18:51:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:51:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:51:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-02-06 18:51:41,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-02-06 18:51:41,368 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 119 flow. Second operand 6 states and 108 transitions. [2025-02-06 18:51:41,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 185 flow [2025-02-06 18:51:41,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:41,369 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 126 flow [2025-02-06 18:51:41,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-02-06 18:51:41,370 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-02-06 18:51:41,370 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 126 flow [2025-02-06 18:51:41,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 18:51:41,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:41,370 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:41,376 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 18:51:41,570 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 18:51:41,571 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:41,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:41,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1018547445, now seen corresponding path program 1 times [2025-02-06 18:51:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:41,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585346708] [2025-02-06 18:51:41,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:41,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:41,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:51:41,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:51:41,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:41,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:41,635 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 18:51:41,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:41,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585346708] [2025-02-06 18:51:41,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585346708] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:41,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:41,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:51:41,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974180551] [2025-02-06 18:51:41,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:41,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:51:41,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:41,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:51:41,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:51:41,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:51:41,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 18:51:41,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:41,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:51:41,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:41,723 INFO L124 PetriNetUnfolderBase]: 364/661 cut-off events. [2025-02-06 18:51:41,723 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2025-02-06 18:51:41,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 661 events. 364/661 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2921 event pairs, 160 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1274. Up to 432 conditions per place. [2025-02-06 18:51:41,726 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 6 changer transitions 2/60 dead transitions. [2025-02-06 18:51:41,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 255 flow [2025-02-06 18:51:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:51:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:51:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-02-06 18:51:41,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2025-02-06 18:51:41,727 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 126 flow. Second operand 3 states and 89 transitions. [2025-02-06 18:51:41,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 255 flow [2025-02-06 18:51:41,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 233 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-06 18:51:41,729 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 142 flow [2025-02-06 18:51:41,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2025-02-06 18:51:41,730 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2025-02-06 18:51:41,731 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 142 flow [2025-02-06 18:51:41,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 18:51:41,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:41,731 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:41,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:51:41,731 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:41,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1426352771, now seen corresponding path program 1 times [2025-02-06 18:51:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:41,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166641174] [2025-02-06 18:51:41,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:41,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:51:41,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:51:41,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:41,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:41,816 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 18:51:41,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166641174] [2025-02-06 18:51:41,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166641174] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273876207] [2025-02-06 18:51:41,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:41,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:41,819 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 18:51:41,820 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 18:51:41,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:51:41,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:51:41,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:41,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:41,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:51:41,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:41,879 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 18:51:41,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:41,911 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 18:51:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273876207] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:41,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:41,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:51:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296811278] [2025-02-06 18:51:41,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:41,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:51:41,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:41,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:51:41,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:51:41,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:51:41,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 142 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 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 18:51:41,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:41,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:51:41,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:42,079 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2025-02-06 18:51:42,080 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2025-02-06 18:51:42,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 745 events. 367/745 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3586 event pairs, 256 based on Foata normal form. 3/588 useless extension candidates. Maximal degree in co-relation 1568. Up to 620 conditions per place. [2025-02-06 18:51:42,083 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 34 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2025-02-06 18:51:42,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 266 flow [2025-02-06 18:51:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:51:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:51:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2025-02-06 18:51:42,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34791666666666665 [2025-02-06 18:51:42,085 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 142 flow. Second operand 10 states and 167 transitions. [2025-02-06 18:51:42,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 266 flow [2025-02-06 18:51:42,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:51:42,087 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 204 flow [2025-02-06 18:51:42,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-02-06 18:51:42,087 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-06 18:51:42,087 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 204 flow [2025-02-06 18:51:42,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 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 18:51:42,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:42,088 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:42,094 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 18:51:42,288 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 18:51:42,288 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:42,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2090437596, now seen corresponding path program 1 times [2025-02-06 18:51:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:42,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245005160] [2025-02-06 18:51:42,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:42,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:51:42,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:51:42,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:42,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:42,352 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 18:51:42,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:42,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245005160] [2025-02-06 18:51:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245005160] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:42,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:42,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:51:42,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719400986] [2025-02-06 18:51:42,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:42,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:51:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:42,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:51:42,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:51:42,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:51:42,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:51:42,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:42,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:51:42,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:42,437 INFO L124 PetriNetUnfolderBase]: 315/590 cut-off events. [2025-02-06 18:51:42,437 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-02-06 18:51:42,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 590 events. 315/590 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2684 event pairs, 112 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 1289. Up to 474 conditions per place. [2025-02-06 18:51:42,440 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 46 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2025-02-06 18:51:42,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 319 flow [2025-02-06 18:51:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:51:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:51:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-02-06 18:51:42,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 18:51:42,443 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 204 flow. Second operand 3 states and 80 transitions. [2025-02-06 18:51:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 319 flow [2025-02-06 18:51:42,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 308 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:51:42,445 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 202 flow [2025-02-06 18:51:42,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2025-02-06 18:51:42,446 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-02-06 18:51:42,446 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 202 flow [2025-02-06 18:51:42,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 18:51:42,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:42,446 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:42,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:51:42,446 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:42,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2090437595, now seen corresponding path program 1 times [2025-02-06 18:51:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:42,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111821344] [2025-02-06 18:51:42,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:42,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:51:42,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:51:42,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:42,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:42,522 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 18:51:42,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:42,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111821344] [2025-02-06 18:51:42,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111821344] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:42,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:42,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:51:42,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860306841] [2025-02-06 18:51:42,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:42,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:51:42,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:42,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:51:42,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:51:42,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:51:42,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 18:51:42,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:42,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:51:42,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:42,636 INFO L124 PetriNetUnfolderBase]: 337/659 cut-off events. [2025-02-06 18:51:42,636 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-02-06 18:51:42,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 659 events. 337/659 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3029 event pairs, 245 based on Foata normal form. 5/543 useless extension candidates. Maximal degree in co-relation 1454. Up to 538 conditions per place. [2025-02-06 18:51:42,639 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 11/66 dead transitions. [2025-02-06 18:51:42,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 338 flow [2025-02-06 18:51:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:51:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:51:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-02-06 18:51:42,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515625 [2025-02-06 18:51:42,641 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 202 flow. Second operand 4 states and 99 transitions. [2025-02-06 18:51:42,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 338 flow [2025-02-06 18:51:42,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:42,642 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 206 flow [2025-02-06 18:51:42,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2025-02-06 18:51:42,643 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-02-06 18:51:42,643 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 206 flow [2025-02-06 18:51:42,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 18:51:42,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:42,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:42,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:51:42,643 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:42,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1813176882, now seen corresponding path program 1 times [2025-02-06 18:51:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:42,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034743179] [2025-02-06 18:51:42,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:42,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:42,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:51:42,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:51:42,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:42,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:42,788 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 18:51:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:42,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034743179] [2025-02-06 18:51:42,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034743179] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:42,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865147886] [2025-02-06 18:51:42,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:42,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:42,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:42,791 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 18:51:42,792 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 18:51:42,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:51:42,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:51:42,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:42,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:42,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:51:42,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:42,878 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 18:51:42,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:51:42,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865147886] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:42,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:51:42,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-06 18:51:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411652622] [2025-02-06 18:51:42,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:42,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:51:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:42,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:51:42,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:51:42,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:51:42,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 18:51:42,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:42,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:51:42,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:42,964 INFO L124 PetriNetUnfolderBase]: 255/504 cut-off events. [2025-02-06 18:51:42,965 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2025-02-06 18:51:42,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 504 events. 255/504 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2189 event pairs, 107 based on Foata normal form. 40/440 useless extension candidates. Maximal degree in co-relation 1113. Up to 292 conditions per place. [2025-02-06 18:51:42,968 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 39 selfloop transitions, 8 changer transitions 4/62 dead transitions. [2025-02-06 18:51:42,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 329 flow [2025-02-06 18:51:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:51:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:51:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-02-06 18:51:42,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484375 [2025-02-06 18:51:42,969 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 206 flow. Second operand 4 states and 93 transitions. [2025-02-06 18:51:42,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 329 flow [2025-02-06 18:51:42,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 319 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:51:42,970 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 204 flow [2025-02-06 18:51:42,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2025-02-06 18:51:42,971 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-02-06 18:51:42,971 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 204 flow [2025-02-06 18:51:42,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 18:51:42,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:42,971 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:42,980 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 [2025-02-06 18:51:43,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:43,175 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:43,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash -277632906, now seen corresponding path program 2 times [2025-02-06 18:51:43,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:43,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595354778] [2025-02-06 18:51:43,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:51:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:43,186 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 18:51:43,192 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-02-06 18:51:43,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:51:43,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:51:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:43,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595354778] [2025-02-06 18:51:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595354778] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:43,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130149588] [2025-02-06 18:51:43,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:51:43,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:43,232 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) [2025-02-06 18:51:43,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:51:43,268 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 18:51:43,275 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-02-06 18:51:43,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:51:43,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:43,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:51:43,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:51:43,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:51:43,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130149588] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:43,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:43,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:51:43,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323552886] [2025-02-06 18:51:43,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:43,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:51:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:43,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:51:43,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:51:43,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:51:43,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 18:51:43,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:43,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:51:43,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:43,395 INFO L124 PetriNetUnfolderBase]: 228/461 cut-off events. [2025-02-06 18:51:43,395 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2025-02-06 18:51:43,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 461 events. 228/461 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1951 event pairs, 157 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1056. Up to 389 conditions per place. [2025-02-06 18:51:43,397 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 26 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2025-02-06 18:51:43,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 276 flow [2025-02-06 18:51:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:51:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:51:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-06 18:51:43,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2025-02-06 18:51:43,398 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 204 flow. Second operand 4 states and 76 transitions. [2025-02-06 18:51:43,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 276 flow [2025-02-06 18:51:43,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 250 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-02-06 18:51:43,400 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 198 flow [2025-02-06 18:51:43,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2025-02-06 18:51:43,400 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2025-02-06 18:51:43,401 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 198 flow [2025-02-06 18:51:43,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 18:51:43,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:43,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:43,407 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 [2025-02-06 18:51:43,605 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,SelfDestructingSolverStorable7 [2025-02-06 18:51:43,605 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:43,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash -998270382, now seen corresponding path program 1 times [2025-02-06 18:51:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:43,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692237564] [2025-02-06 18:51:43,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:43,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:43,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:51:43,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:51:43,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:43,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:43,643 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 18:51:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692237564] [2025-02-06 18:51:43,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692237564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:43,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:43,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:51:43,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773833316] [2025-02-06 18:51:43,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:43,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:51:43,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:43,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:51:43,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:51:43,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:51:43,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:51:43,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:43,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:51:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:43,704 INFO L124 PetriNetUnfolderBase]: 239/534 cut-off events. [2025-02-06 18:51:43,704 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2025-02-06 18:51:43,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 534 events. 239/534 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2335 event pairs, 65 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1070. Up to 273 conditions per place. [2025-02-06 18:51:43,706 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 49 selfloop transitions, 3 changer transitions 2/64 dead transitions. [2025-02-06 18:51:43,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 347 flow [2025-02-06 18:51:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:51:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:51:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-02-06 18:51:43,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-06 18:51:43,707 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 198 flow. Second operand 3 states and 81 transitions. [2025-02-06 18:51:43,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 347 flow [2025-02-06 18:51:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 317 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:51:43,712 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 181 flow [2025-02-06 18:51:43,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-02-06 18:51:43,713 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2025-02-06 18:51:43,713 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 181 flow [2025-02-06 18:51:43,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:51:43,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:43,713 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:43,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:51:43,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:43,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:43,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1450778961, now seen corresponding path program 1 times [2025-02-06 18:51:43,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:43,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970197619] [2025-02-06 18:51:43,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:43,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:51:43,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:51:43,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:43,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:43,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:43,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970197619] [2025-02-06 18:51:43,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970197619] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:43,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134158986] [2025-02-06 18:51:43,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:43,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:43,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:43,844 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) [2025-02-06 18:51:43,845 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 [2025-02-06 18:51:43,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:51:43,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:51:43,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:43,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:43,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:51:43,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:51:43,965 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:51:43,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134158986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:43,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:51:43,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-02-06 18:51:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145086639] [2025-02-06 18:51:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:43,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:51:43,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:43,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:51:43,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:51:43,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:51:43,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 18:51:43,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:43,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:51:43,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:44,095 INFO L124 PetriNetUnfolderBase]: 299/650 cut-off events. [2025-02-06 18:51:44,095 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-02-06 18:51:44,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 650 events. 299/650 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2927 event pairs, 50 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 1356. Up to 210 conditions per place. [2025-02-06 18:51:44,098 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 63 selfloop transitions, 11 changer transitions 4/88 dead transitions. [2025-02-06 18:51:44,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 436 flow [2025-02-06 18:51:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:51:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:51:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2025-02-06 18:51:44,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2025-02-06 18:51:44,099 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 181 flow. Second operand 6 states and 149 transitions. [2025-02-06 18:51:44,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 436 flow [2025-02-06 18:51:44,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:44,100 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 233 flow [2025-02-06 18:51:44,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2025-02-06 18:51:44,101 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-06 18:51:44,101 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 233 flow [2025-02-06 18:51:44,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 18:51:44,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:44,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:44,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:51:44,305 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,SelfDestructingSolverStorable9 [2025-02-06 18:51:44,305 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:44,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1665803122, now seen corresponding path program 1 times [2025-02-06 18:51:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:44,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761289068] [2025-02-06 18:51:44,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:44,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:44,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:51:44,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:51:44,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:44,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:44,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:44,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761289068] [2025-02-06 18:51:44,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761289068] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:44,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932787744] [2025-02-06 18:51:44,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:44,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:44,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:44,717 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) [2025-02-06 18:51:44,718 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 [2025-02-06 18:51:44,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:51:44,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:51:44,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:44,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:44,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 18:51:44,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:44,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-06 18:51:45,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-06 18:51:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:45,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:45,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2025-02-06 18:51:45,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-02-06 18:51:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932787744] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:45,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 25 [2025-02-06 18:51:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90430901] [2025-02-06 18:51:45,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:45,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 18:51:45,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:45,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 18:51:45,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2025-02-06 18:51:45,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-02-06 18:51:45,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 233 flow. Second operand has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 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 18:51:45,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:45,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-02-06 18:51:45,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:47,330 INFO L124 PetriNetUnfolderBase]: 1185/2274 cut-off events. [2025-02-06 18:51:47,330 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2025-02-06 18:51:47,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 2274 events. 1185/2274 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13739 event pairs, 160 based on Foata normal form. 10/2062 useless extension candidates. Maximal degree in co-relation 4861. Up to 400 conditions per place. [2025-02-06 18:51:47,341 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 186 selfloop transitions, 54 changer transitions 27/274 dead transitions. [2025-02-06 18:51:47,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 274 transitions, 1468 flow [2025-02-06 18:51:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 18:51:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-06 18:51:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 525 transitions. [2025-02-06 18:51:47,343 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2025-02-06 18:51:47,343 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 233 flow. Second operand 30 states and 525 transitions. [2025-02-06 18:51:47,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 274 transitions, 1468 flow [2025-02-06 18:51:47,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 274 transitions, 1463 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:47,349 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 644 flow [2025-02-06 18:51:47,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=644, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2025-02-06 18:51:47,350 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2025-02-06 18:51:47,350 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 644 flow [2025-02-06 18:51:47,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 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 18:51:47,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:47,350 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:47,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:51:47,550 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,SelfDestructingSolverStorable10 [2025-02-06 18:51:47,551 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:47,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash -145554638, now seen corresponding path program 1 times [2025-02-06 18:51:47,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:47,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542324261] [2025-02-06 18:51:47,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:47,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:47,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:51:47,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:51:47,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:47,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:51:47,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542324261] [2025-02-06 18:51:47,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542324261] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:47,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:47,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:51:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557965738] [2025-02-06 18:51:47,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:47,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:51:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:47,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:51:47,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:51:47,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-02-06 18:51:47,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 18:51:47,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:47,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-02-06 18:51:47,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:47,757 INFO L124 PetriNetUnfolderBase]: 892/1837 cut-off events. [2025-02-06 18:51:47,757 INFO L125 PetriNetUnfolderBase]: For 4007/4024 co-relation queries the response was YES. [2025-02-06 18:51:47,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6192 conditions, 1837 events. 892/1837 cut-off events. For 4007/4024 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11188 event pairs, 370 based on Foata normal form. 6/1842 useless extension candidates. Maximal degree in co-relation 6056. Up to 1454 conditions per place. [2025-02-06 18:51:47,767 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 86 selfloop transitions, 2 changer transitions 7/106 dead transitions. [2025-02-06 18:51:47,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 932 flow [2025-02-06 18:51:47,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:51:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:51:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-02-06 18:51:47,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-06 18:51:47,768 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 644 flow. Second operand 3 states and 81 transitions. [2025-02-06 18:51:47,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 932 flow [2025-02-06 18:51:47,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 871 flow, removed 19 selfloop flow, removed 8 redundant places. [2025-02-06 18:51:47,782 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 522 flow [2025-02-06 18:51:47,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2025-02-06 18:51:47,786 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-02-06 18:51:47,786 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 522 flow [2025-02-06 18:51:47,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 18:51:47,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:47,786 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, 1] [2025-02-06 18:51:47,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:51:47,786 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:47,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1565049577, now seen corresponding path program 1 times [2025-02-06 18:51:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:47,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413319312] [2025-02-06 18:51:47,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:47,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:51:47,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:51:47,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:47,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:51:47,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:47,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413319312] [2025-02-06 18:51:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413319312] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:47,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:47,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:51:47,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596662975] [2025-02-06 18:51:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:47,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:51:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:47,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:51:47,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:51:47,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:51:47,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 18:51:47,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:47,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:51:47,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:48,112 INFO L124 PetriNetUnfolderBase]: 1431/2889 cut-off events. [2025-02-06 18:51:48,113 INFO L125 PetriNetUnfolderBase]: For 6070/6130 co-relation queries the response was YES. [2025-02-06 18:51:48,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 2889 events. 1431/2889 cut-off events. For 6070/6130 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18296 event pairs, 398 based on Foata normal form. 32/2898 useless extension candidates. Maximal degree in co-relation 8740. Up to 1046 conditions per place. [2025-02-06 18:51:48,125 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 92 selfloop transitions, 26 changer transitions 3/134 dead transitions. [2025-02-06 18:51:48,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 1118 flow [2025-02-06 18:51:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:51:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:51:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-06 18:51:48,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-06 18:51:48,126 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 522 flow. Second operand 4 states and 110 transitions. [2025-02-06 18:51:48,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 1118 flow [2025-02-06 18:51:48,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 1116 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:48,135 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 819 flow [2025-02-06 18:51:48,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=819, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2025-02-06 18:51:48,136 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2025-02-06 18:51:48,136 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 819 flow [2025-02-06 18:51:48,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 18:51:48,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:48,136 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:48,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:51:48,136 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:48,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash 354704587, now seen corresponding path program 1 times [2025-02-06 18:51:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:48,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877305354] [2025-02-06 18:51:48,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:48,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:48,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:51:48,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:51:48,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:48,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:48,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877305354] [2025-02-06 18:51:48,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877305354] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253308186] [2025-02-06 18:51:48,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:48,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:48,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:48,750 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) [2025-02-06 18:51:48,751 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 [2025-02-06 18:51:48,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:51:48,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:51:48,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:48,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:48,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 18:51:48,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:51:48,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:48,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:51:48,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-02-06 18:51:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:51:49,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253308186] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:49,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:51:49,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 6] total 22 [2025-02-06 18:51:49,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832943748] [2025-02-06 18:51:49,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:49,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:51:49,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:49,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:51:49,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:51:49,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:51:49,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 819 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 18:51:49,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:49,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:51:49,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:49,339 INFO L124 PetriNetUnfolderBase]: 1720/3391 cut-off events. [2025-02-06 18:51:49,340 INFO L125 PetriNetUnfolderBase]: For 9551/9575 co-relation queries the response was YES. [2025-02-06 18:51:49,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12414 conditions, 3391 events. 1720/3391 cut-off events. For 9551/9575 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 21667 event pairs, 242 based on Foata normal form. 42/3392 useless extension candidates. Maximal degree in co-relation 11146. Up to 1567 conditions per place. [2025-02-06 18:51:49,362 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 116 selfloop transitions, 18 changer transitions 5/150 dead transitions. [2025-02-06 18:51:49,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 150 transitions, 1467 flow [2025-02-06 18:51:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:51:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:51:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2025-02-06 18:51:49,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-06 18:51:49,363 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 819 flow. Second operand 7 states and 154 transitions. [2025-02-06 18:51:49,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 150 transitions, 1467 flow [2025-02-06 18:51:49,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1455 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-06 18:51:49,378 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 892 flow [2025-02-06 18:51:49,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2025-02-06 18:51:49,378 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-02-06 18:51:49,378 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 892 flow [2025-02-06 18:51:49,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 18:51:49,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:49,379 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:49,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:51:49,579 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 [2025-02-06 18:51:49,579 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:49,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1140167598, now seen corresponding path program 2 times [2025-02-06 18:51:49,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391525164] [2025-02-06 18:51:49,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:51:49,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:49,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:51:49,596 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:51:49,596 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:51:49,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:51:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391525164] [2025-02-06 18:51:49,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391525164] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:49,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:49,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:51:49,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728377396] [2025-02-06 18:51:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:49,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 18:51:49,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:49,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 18:51:49,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:51:49,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-02-06 18:51:49,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 892 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 18:51:49,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:49,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-02-06 18:51:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:50,035 INFO L124 PetriNetUnfolderBase]: 1735/3464 cut-off events. [2025-02-06 18:51:50,036 INFO L125 PetriNetUnfolderBase]: For 11789/11837 co-relation queries the response was YES. [2025-02-06 18:51:50,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13593 conditions, 3464 events. 1735/3464 cut-off events. For 11789/11837 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 21480 event pairs, 145 based on Foata normal form. 46/3477 useless extension candidates. Maximal degree in co-relation 11686. Up to 777 conditions per place. [2025-02-06 18:51:50,060 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 135 selfloop transitions, 22 changer transitions 4/173 dead transitions. [2025-02-06 18:51:50,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 173 transitions, 1764 flow [2025-02-06 18:51:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:51:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:51:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2025-02-06 18:51:50,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-02-06 18:51:50,062 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 892 flow. Second operand 8 states and 188 transitions. [2025-02-06 18:51:50,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 173 transitions, 1764 flow [2025-02-06 18:51:50,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 173 transitions, 1709 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-02-06 18:51:50,087 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 927 flow [2025-02-06 18:51:50,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=927, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2025-02-06 18:51:50,088 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2025-02-06 18:51:50,089 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 927 flow [2025-02-06 18:51:50,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 18:51:50,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:50,089 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] [2025-02-06 18:51:50,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:51:50,089 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:50,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash -221228072, now seen corresponding path program 1 times [2025-02-06 18:51:50,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:50,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607746864] [2025-02-06 18:51:50,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:50,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:50,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:51:50,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:51:50,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:50,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607746864] [2025-02-06 18:51:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607746864] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907365576] [2025-02-06 18:51:50,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:50,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:50,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:50,226 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) [2025-02-06 18:51:50,228 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 [2025-02-06 18:51:50,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:51:50,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:51:50,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:50,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:50,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:51:50,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:51:50,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:51:50,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907365576] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:50,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:50,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2025-02-06 18:51:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821425649] [2025-02-06 18:51:50,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:50,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:51:50,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:50,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:51:50,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:51:50,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:51:50,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 927 flow. Second operand has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 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 18:51:50,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:50,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:51:50,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:51,050 INFO L124 PetriNetUnfolderBase]: 1126/2372 cut-off events. [2025-02-06 18:51:51,050 INFO L125 PetriNetUnfolderBase]: For 9239/9251 co-relation queries the response was YES. [2025-02-06 18:51:51,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 2372 events. 1126/2372 cut-off events. For 9239/9251 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13635 event pairs, 392 based on Foata normal form. 11/2354 useless extension candidates. Maximal degree in co-relation 8879. Up to 895 conditions per place. [2025-02-06 18:51:51,064 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 52 selfloop transitions, 22 changer transitions 27/114 dead transitions. [2025-02-06 18:51:51,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1025 flow [2025-02-06 18:51:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:51:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:51:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2025-02-06 18:51:51,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36217948717948717 [2025-02-06 18:51:51,065 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 927 flow. Second operand 13 states and 226 transitions. [2025-02-06 18:51:51,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1025 flow [2025-02-06 18:51:51,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 114 transitions, 940 flow, removed 22 selfloop flow, removed 11 redundant places. [2025-02-06 18:51:51,080 INFO L231 Difference]: Finished difference. Result has 113 places, 74 transitions, 584 flow [2025-02-06 18:51:51,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=113, PETRI_TRANSITIONS=74} [2025-02-06 18:51:51,080 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2025-02-06 18:51:51,080 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 74 transitions, 584 flow [2025-02-06 18:51:51,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 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 18:51:51,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:51,081 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2025-02-06 18:51:51,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:51:51,281 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,SelfDestructingSolverStorable15 [2025-02-06 18:51:51,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:51,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:51,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1855140109, now seen corresponding path program 1 times [2025-02-06 18:51:51,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:51,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334502968] [2025-02-06 18:51:51,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:51,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:51,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 18:51:51,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 18:51:51,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:51,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:51,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334502968] [2025-02-06 18:51:51,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334502968] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732667995] [2025-02-06 18:51:51,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:51,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:51,436 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) [2025-02-06 18:51:51,437 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 [2025-02-06 18:51:51,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 18:51:51,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 18:51:51,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:51,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:51,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 18:51:51,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:51,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732667995] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:51,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:51,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2025-02-06 18:51:51,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480732205] [2025-02-06 18:51:51,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:51,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 18:51:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:51,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 18:51:51,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2025-02-06 18:51:51,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:51:51,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 74 transitions, 584 flow. Second operand has 28 states, 28 states have (on average 14.571428571428571) internal successors, (408), 28 states have internal predecessors, (408), 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 18:51:51,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:51,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:51:51,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:52,733 INFO L124 PetriNetUnfolderBase]: 2672/5370 cut-off events. [2025-02-06 18:51:52,733 INFO L125 PetriNetUnfolderBase]: For 19825/19867 co-relation queries the response was YES. [2025-02-06 18:51:52,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20264 conditions, 5370 events. 2672/5370 cut-off events. For 19825/19867 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 37047 event pairs, 246 based on Foata normal form. 206/5550 useless extension candidates. Maximal degree in co-relation 19396. Up to 846 conditions per place. [2025-02-06 18:51:52,762 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 235 selfloop transitions, 72 changer transitions 14/334 dead transitions. [2025-02-06 18:51:52,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 334 transitions, 2928 flow [2025-02-06 18:51:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 18:51:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-06 18:51:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 589 transitions. [2025-02-06 18:51:52,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4382440476190476 [2025-02-06 18:51:52,764 INFO L175 Difference]: Start difference. First operand has 113 places, 74 transitions, 584 flow. Second operand 28 states and 589 transitions. [2025-02-06 18:51:52,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 334 transitions, 2928 flow [2025-02-06 18:51:52,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 334 transitions, 2773 flow, removed 44 selfloop flow, removed 14 redundant places. [2025-02-06 18:51:52,798 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 1398 flow [2025-02-06 18:51:52,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1398, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2025-02-06 18:51:52,798 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2025-02-06 18:51:52,798 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 1398 flow [2025-02-06 18:51:52,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.571428571428571) internal successors, (408), 28 states have internal predecessors, (408), 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 18:51:52,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:52,799 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2025-02-06 18:51:52,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:51:52,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:52,999 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:51:53,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1427791290, now seen corresponding path program 1 times [2025-02-06 18:51:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:53,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229652431] [2025-02-06 18:51:53,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:53,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 18:51:53,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 18:51:53,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:53,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:53,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:53,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229652431] [2025-02-06 18:51:53,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229652431] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:53,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22088760] [2025-02-06 18:51:53,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:53,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:53,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:53,657 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) [2025-02-06 18:51:53,658 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 [2025-02-06 18:51:53,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 18:51:53,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 18:51:53,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:53,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:53,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-06 18:51:53,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:53,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-06 18:51:54,326 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-02-06 18:51:54,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2025-02-06 18:51:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:54,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:54,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2025-02-06 18:51:54,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:51:54,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 99 [2025-02-06 18:51:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:55,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22088760] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:55,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:55,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2025-02-06 18:51:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551467625] [2025-02-06 18:51:55,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:55,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-06 18:51:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:55,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-06 18:51:55,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1871, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 18:51:55,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-02-06 18:51:55,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 1398 flow. Second operand has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 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 18:51:55,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:55,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-02-06 18:51:55,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:03,026 INFO L124 PetriNetUnfolderBase]: 9712/17510 cut-off events. [2025-02-06 18:52:03,026 INFO L125 PetriNetUnfolderBase]: For 89485/89485 co-relation queries the response was YES. [2025-02-06 18:52:03,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70273 conditions, 17510 events. 9712/17510 cut-off events. For 89485/89485 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 132058 event pairs, 635 based on Foata normal form. 1070/18558 useless extension candidates. Maximal degree in co-relation 62981. Up to 3208 conditions per place. [2025-02-06 18:52:03,130 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 471 selfloop transitions, 440 changer transitions 118/1037 dead transitions. [2025-02-06 18:52:03,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 1037 transitions, 11377 flow [2025-02-06 18:52:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2025-02-06 18:52:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2025-02-06 18:52:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 1594 transitions. [2025-02-06 18:52:03,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33208333333333334 [2025-02-06 18:52:03,134 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 1398 flow. Second operand 100 states and 1594 transitions. [2025-02-06 18:52:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 1037 transitions, 11377 flow [2025-02-06 18:52:03,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1037 transitions, 10874 flow, removed 243 selfloop flow, removed 7 redundant places. [2025-02-06 18:52:03,363 INFO L231 Difference]: Finished difference. Result has 276 places, 563 transitions, 8206 flow [2025-02-06 18:52:03,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=8206, PETRI_PLACES=276, PETRI_TRANSITIONS=563} [2025-02-06 18:52:03,363 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 230 predicate places. [2025-02-06 18:52:03,363 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 563 transitions, 8206 flow [2025-02-06 18:52:03,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 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 18:52:03,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:03,364 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:03,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 18:52:03,564 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,SelfDestructingSolverStorable17 [2025-02-06 18:52:03,564 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:03,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:03,565 INFO L85 PathProgramCache]: Analyzing trace with hash -213514982, now seen corresponding path program 1 times [2025-02-06 18:52:03,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:03,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611200484] [2025-02-06 18:52:03,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:03,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:03,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 18:52:03,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:03,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:03,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:04,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611200484] [2025-02-06 18:52:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611200484] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863804026] [2025-02-06 18:52:04,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:04,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:04,128 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) [2025-02-06 18:52:04,130 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 [2025-02-06 18:52:04,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 18:52:04,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:04,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:04,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:04,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 18:52:04,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:04,555 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 18:52:04,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2025-02-06 18:52:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:04,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:04,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:52:04,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2025-02-06 18:52:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863804026] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:05,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2025-02-06 18:52:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100526398] [2025-02-06 18:52:05,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:05,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-06 18:52:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:05,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-06 18:52:05,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2025-02-06 18:52:05,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-02-06 18:52:05,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 563 transitions, 8206 flow. Second operand has 43 states, 43 states have (on average 11.767441860465116) internal successors, (506), 43 states have internal predecessors, (506), 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 18:52:05,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:05,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-02-06 18:52:05,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:08,440 INFO L124 PetriNetUnfolderBase]: 3900/7627 cut-off events. [2025-02-06 18:52:08,440 INFO L125 PetriNetUnfolderBase]: For 188018/188254 co-relation queries the response was YES. [2025-02-06 18:52:08,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47645 conditions, 7627 events. 3900/7627 cut-off events. For 188018/188254 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 54862 event pairs, 296 based on Foata normal form. 357/7948 useless extension candidates. Maximal degree in co-relation 47554. Up to 2229 conditions per place. [2025-02-06 18:52:08,615 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 306 selfloop transitions, 192 changer transitions 40/551 dead transitions. [2025-02-06 18:52:08,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 551 transitions, 8182 flow [2025-02-06 18:52:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 18:52:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-06 18:52:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 614 transitions. [2025-02-06 18:52:08,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34572072072072074 [2025-02-06 18:52:08,619 INFO L175 Difference]: Start difference. First operand has 276 places, 563 transitions, 8206 flow. Second operand 37 states and 614 transitions. [2025-02-06 18:52:08,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 551 transitions, 8182 flow [2025-02-06 18:52:09,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 551 transitions, 7134 flow, removed 425 selfloop flow, removed 35 redundant places. [2025-02-06 18:52:09,035 INFO L231 Difference]: Finished difference. Result has 267 places, 375 transitions, 5312 flow [2025-02-06 18:52:09,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4006, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5312, PETRI_PLACES=267, PETRI_TRANSITIONS=375} [2025-02-06 18:52:09,036 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 221 predicate places. [2025-02-06 18:52:09,036 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 375 transitions, 5312 flow [2025-02-06 18:52:09,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.767441860465116) internal successors, (506), 43 states have internal predecessors, (506), 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 18:52:09,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:09,036 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:09,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 18:52:09,236 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 [2025-02-06 18:52:09,237 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:09,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2009719494, now seen corresponding path program 1 times [2025-02-06 18:52:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687781068] [2025-02-06 18:52:09,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:09,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:09,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 18:52:09,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:09,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:09,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-06 18:52:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687781068] [2025-02-06 18:52:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687781068] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:52:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627315363] [2025-02-06 18:52:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:09,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:09,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:09,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:09,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-02-06 18:52:09,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 375 transitions, 5312 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 18:52:09,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:09,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-02-06 18:52:09,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:10,874 INFO L124 PetriNetUnfolderBase]: 4577/9333 cut-off events. [2025-02-06 18:52:10,874 INFO L125 PetriNetUnfolderBase]: For 232531/232877 co-relation queries the response was YES. [2025-02-06 18:52:10,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58477 conditions, 9333 events. 4577/9333 cut-off events. For 232531/232877 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 71338 event pairs, 854 based on Foata normal form. 420/9721 useless extension candidates. Maximal degree in co-relation 58393. Up to 4154 conditions per place. [2025-02-06 18:52:10,948 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 412 selfloop transitions, 4 changer transitions 19/452 dead transitions. [2025-02-06 18:52:10,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 452 transitions, 7602 flow [2025-02-06 18:52:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-02-06 18:52:10,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-02-06 18:52:10,949 INFO L175 Difference]: Start difference. First operand has 267 places, 375 transitions, 5312 flow. Second operand 4 states and 94 transitions. [2025-02-06 18:52:10,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 452 transitions, 7602 flow [2025-02-06 18:52:11,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 452 transitions, 7025 flow, removed 162 selfloop flow, removed 21 redundant places. [2025-02-06 18:52:11,415 INFO L231 Difference]: Finished difference. Result has 245 places, 341 transitions, 4463 flow [2025-02-06 18:52:11,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4463, PETRI_PLACES=245, PETRI_TRANSITIONS=341} [2025-02-06 18:52:11,416 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 199 predicate places. [2025-02-06 18:52:11,416 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 341 transitions, 4463 flow [2025-02-06 18:52:11,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 18:52:11,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:11,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:11,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:52:11,416 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:11,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash -757621500, now seen corresponding path program 2 times [2025-02-06 18:52:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:11,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561212359] [2025-02-06 18:52:11,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:11,421 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-06 18:52:11,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:11,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:52:11,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:11,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:11,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561212359] [2025-02-06 18:52:11,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561212359] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:11,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41013280] [2025-02-06 18:52:11,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:11,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:11,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:11,958 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) [2025-02-06 18:52:11,960 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 [2025-02-06 18:52:11,997 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-06 18:52:12,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:12,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:52:12,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:12,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 18:52:12,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:12,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-06 18:52:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:12,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:12,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-02-06 18:52:12,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:52:12,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 139 [2025-02-06 18:52:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:13,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41013280] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:13,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:13,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 50 [2025-02-06 18:52:13,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999122957] [2025-02-06 18:52:13,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:13,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-06 18:52:13,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:13,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-06 18:52:13,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2260, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 18:52:13,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-02-06 18:52:13,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 341 transitions, 4463 flow. Second operand has 52 states, 52 states have (on average 11.557692307692308) internal successors, (601), 52 states have internal predecessors, (601), 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 18:52:13,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:13,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-02-06 18:52:13,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:20,535 INFO L124 PetriNetUnfolderBase]: 4318/8433 cut-off events. [2025-02-06 18:52:20,535 INFO L125 PetriNetUnfolderBase]: For 176278/176490 co-relation queries the response was YES. [2025-02-06 18:52:20,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52578 conditions, 8433 events. 4318/8433 cut-off events. For 176278/176490 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 59978 event pairs, 246 based on Foata normal form. 390/8804 useless extension candidates. Maximal degree in co-relation 52497. Up to 2425 conditions per place. [2025-02-06 18:52:20,627 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 361 selfloop transitions, 480 changer transitions 85/940 dead transitions. [2025-02-06 18:52:20,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 940 transitions, 12914 flow [2025-02-06 18:52:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-02-06 18:52:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2025-02-06 18:52:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 2014 transitions. [2025-02-06 18:52:20,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3178661616161616 [2025-02-06 18:52:20,630 INFO L175 Difference]: Start difference. First operand has 245 places, 341 transitions, 4463 flow. Second operand 132 states and 2014 transitions. [2025-02-06 18:52:20,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 940 transitions, 12914 flow [2025-02-06 18:52:20,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 940 transitions, 11314 flow, removed 735 selfloop flow, removed 23 redundant places. [2025-02-06 18:52:20,937 INFO L231 Difference]: Finished difference. Result has 356 places, 551 transitions, 8656 flow [2025-02-06 18:52:20,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=132, PETRI_FLOW=8656, PETRI_PLACES=356, PETRI_TRANSITIONS=551} [2025-02-06 18:52:20,938 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 310 predicate places. [2025-02-06 18:52:20,938 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 551 transitions, 8656 flow [2025-02-06 18:52:20,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 11.557692307692308) internal successors, (601), 52 states have internal predecessors, (601), 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 18:52:20,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:20,938 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:20,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 18:52:21,138 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 [2025-02-06 18:52:21,139 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:21,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash 72377028, now seen corresponding path program 3 times [2025-02-06 18:52:21,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:21,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573179785] [2025-02-06 18:52:21,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:52:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:21,144 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-02-06 18:52:21,152 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 37 statements. [2025-02-06 18:52:21,152 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 18:52:21,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-06 18:52:21,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573179785] [2025-02-06 18:52:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573179785] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:21,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 18:52:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812031635] [2025-02-06 18:52:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:21,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:52:21,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:21,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:52:21,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:52:21,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:52:21,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 551 transitions, 8656 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 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 18:52:21,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:21,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:52:21,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:22,916 INFO L124 PetriNetUnfolderBase]: 5204/10109 cut-off events. [2025-02-06 18:52:22,917 INFO L125 PetriNetUnfolderBase]: For 225110/225428 co-relation queries the response was YES. [2025-02-06 18:52:22,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67810 conditions, 10109 events. 5204/10109 cut-off events. For 225110/225428 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 71363 event pairs, 785 based on Foata normal form. 376/10435 useless extension candidates. Maximal degree in co-relation 67727. Up to 4603 conditions per place. [2025-02-06 18:52:23,008 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 563 selfloop transitions, 220 changer transitions 14/811 dead transitions. [2025-02-06 18:52:23,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 811 transitions, 14473 flow [2025-02-06 18:52:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:52:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:52:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 308 transitions. [2025-02-06 18:52:23,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-06 18:52:23,010 INFO L175 Difference]: Start difference. First operand has 356 places, 551 transitions, 8656 flow. Second operand 14 states and 308 transitions. [2025-02-06 18:52:23,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 811 transitions, 14473 flow [2025-02-06 18:52:23,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 811 transitions, 12350 flow, removed 854 selfloop flow, removed 28 redundant places. [2025-02-06 18:52:23,882 INFO L231 Difference]: Finished difference. Result has 334 places, 646 transitions, 9710 flow [2025-02-06 18:52:23,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7156, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9710, PETRI_PLACES=334, PETRI_TRANSITIONS=646} [2025-02-06 18:52:23,882 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 288 predicate places. [2025-02-06 18:52:23,882 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 646 transitions, 9710 flow [2025-02-06 18:52:23,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 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 18:52:23,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:23,883 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:23,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:52:23,883 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:23,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash 458793622, now seen corresponding path program 4 times [2025-02-06 18:52:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307074086] [2025-02-06 18:52:23,883 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:52:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:23,892 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-02-06 18:52:23,908 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:23,908 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:52:23,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:24,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:24,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307074086] [2025-02-06 18:52:24,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307074086] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:24,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183045295] [2025-02-06 18:52:24,396 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:52:24,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:24,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:24,398 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) [2025-02-06 18:52:24,400 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 [2025-02-06 18:52:24,440 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-02-06 18:52:24,457 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:24,457 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:52:24,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:24,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 18:52:24,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:24,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-06 18:52:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:24,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:25,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-02-06 18:52:25,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:52:25,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2025-02-06 18:52:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183045295] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:25,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 48 [2025-02-06 18:52:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378224125] [2025-02-06 18:52:25,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:25,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-02-06 18:52:25,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:25,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-02-06 18:52:25,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=2098, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 18:52:25,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-02-06 18:52:25,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 646 transitions, 9710 flow. Second operand has 50 states, 50 states have (on average 11.62) internal successors, (581), 50 states have internal predecessors, (581), 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 18:52:25,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:25,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-02-06 18:52:25,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:30,429 INFO L124 PetriNetUnfolderBase]: 5932/11467 cut-off events. [2025-02-06 18:52:30,429 INFO L125 PetriNetUnfolderBase]: For 248684/249086 co-relation queries the response was YES. [2025-02-06 18:52:30,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76033 conditions, 11467 events. 5932/11467 cut-off events. For 248684/249086 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 83392 event pairs, 603 based on Foata normal form. 432/11842 useless extension candidates. Maximal degree in co-relation 75949. Up to 5262 conditions per place. [2025-02-06 18:52:30,533 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 412 selfloop transitions, 592 changer transitions 35/1053 dead transitions. [2025-02-06 18:52:30,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 1053 transitions, 16253 flow [2025-02-06 18:52:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-02-06 18:52:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2025-02-06 18:52:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 1195 transitions. [2025-02-06 18:52:30,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3111979166666667 [2025-02-06 18:52:30,534 INFO L175 Difference]: Start difference. First operand has 334 places, 646 transitions, 9710 flow. Second operand 80 states and 1195 transitions. [2025-02-06 18:52:30,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 1053 transitions, 16253 flow [2025-02-06 18:52:31,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1053 transitions, 15869 flow, removed 42 selfloop flow, removed 7 redundant places. [2025-02-06 18:52:31,737 INFO L231 Difference]: Finished difference. Result has 420 places, 817 transitions, 13664 flow [2025-02-06 18:52:31,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9462, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=13664, PETRI_PLACES=420, PETRI_TRANSITIONS=817} [2025-02-06 18:52:31,738 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 374 predicate places. [2025-02-06 18:52:31,738 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 817 transitions, 13664 flow [2025-02-06 18:52:31,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.62) internal successors, (581), 50 states have internal predecessors, (581), 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 18:52:31,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:31,739 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:31,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 18:52:31,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:31,939 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:31,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash -154364210, now seen corresponding path program 5 times [2025-02-06 18:52:31,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:31,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27649173] [2025-02-06 18:52:31,940 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:52:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:31,947 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-02-06 18:52:31,957 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:31,958 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 18:52:31,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:32,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:32,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27649173] [2025-02-06 18:52:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27649173] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:32,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743305174] [2025-02-06 18:52:32,506 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:52:32,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:32,508 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) [2025-02-06 18:52:32,510 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 [2025-02-06 18:52:32,546 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-02-06 18:52:32,561 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:52:32,561 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 18:52:32,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:32,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 18:52:32,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:52:32,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:32,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:52:32,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-02-06 18:52:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:52:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743305174] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:33,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 9] total 35 [2025-02-06 18:52:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634365877] [2025-02-06 18:52:33,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:33,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-06 18:52:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:33,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-06 18:52:33,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2025-02-06 18:52:33,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-02-06 18:52:33,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 817 transitions, 13664 flow. Second operand has 37 states, 37 states have (on average 12.135135135135135) internal successors, (449), 37 states have internal predecessors, (449), 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 18:52:33,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:33,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-02-06 18:52:33,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:37,801 INFO L124 PetriNetUnfolderBase]: 6924/13403 cut-off events. [2025-02-06 18:52:37,801 INFO L125 PetriNetUnfolderBase]: For 328473/328945 co-relation queries the response was YES. [2025-02-06 18:52:37,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94485 conditions, 13403 events. 6924/13403 cut-off events. For 328473/328945 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 101739 event pairs, 205 based on Foata normal form. 596/13987 useless extension candidates. Maximal degree in co-relation 94382. Up to 3116 conditions per place. [2025-02-06 18:52:37,920 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 653 selfloop transitions, 627 changer transitions 38/1332 dead transitions. [2025-02-06 18:52:37,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1332 transitions, 22927 flow [2025-02-06 18:52:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-02-06 18:52:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2025-02-06 18:52:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 1164 transitions. [2025-02-06 18:52:37,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3321917808219178 [2025-02-06 18:52:37,922 INFO L175 Difference]: Start difference. First operand has 420 places, 817 transitions, 13664 flow. Second operand 73 states and 1164 transitions. [2025-02-06 18:52:37,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1332 transitions, 22927 flow [2025-02-06 18:52:39,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1332 transitions, 22156 flow, removed 246 selfloop flow, removed 33 redundant places. [2025-02-06 18:52:39,874 INFO L231 Difference]: Finished difference. Result has 465 places, 973 transitions, 17636 flow [2025-02-06 18:52:39,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13036, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=17636, PETRI_PLACES=465, PETRI_TRANSITIONS=973} [2025-02-06 18:52:39,875 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 419 predicate places. [2025-02-06 18:52:39,875 INFO L471 AbstractCegarLoop]: Abstraction has has 465 places, 973 transitions, 17636 flow [2025-02-06 18:52:39,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 12.135135135135135) internal successors, (449), 37 states have internal predecessors, (449), 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 18:52:39,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:39,875 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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] [2025-02-06 18:52:39,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 18:52:40,075 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,SelfDestructingSolverStorable23 [2025-02-06 18:52:40,075 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:40,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:40,076 INFO L85 PathProgramCache]: Analyzing trace with hash -240426659, now seen corresponding path program 2 times [2025-02-06 18:52:40,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:40,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493802874] [2025-02-06 18:52:40,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:40,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:40,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-06 18:52:40,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:52:40,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:52:40,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:40,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493802874] [2025-02-06 18:52:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493802874] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801715785] [2025-02-06 18:52:40,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:40,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:40,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:40,857 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) [2025-02-06 18:52:40,973 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 [2025-02-06 18:52:41,010 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-06 18:52:41,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:52:41,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:52:41,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:41,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 18:52:41,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:52:41,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:41,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:52:41,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-02-06 18:52:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:52:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801715785] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:41,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 9] total 40 [2025-02-06 18:52:41,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539847644] [2025-02-06 18:52:41,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:41,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-06 18:52:41,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:41,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-06 18:52:41,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1491, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 18:52:41,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-02-06 18:52:41,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 973 transitions, 17636 flow. Second operand has 42 states, 42 states have (on average 11.0) internal successors, (462), 42 states have internal predecessors, (462), 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 18:52:41,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:41,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-02-06 18:52:41,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:47,638 INFO L124 PetriNetUnfolderBase]: 10585/19510 cut-off events. [2025-02-06 18:52:47,638 INFO L125 PetriNetUnfolderBase]: For 481331/481331 co-relation queries the response was YES. [2025-02-06 18:52:47,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137091 conditions, 19510 events. 10585/19510 cut-off events. For 481331/481331 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 151855 event pairs, 745 based on Foata normal form. 432/19894 useless extension candidates. Maximal degree in co-relation 136982. Up to 5307 conditions per place. [2025-02-06 18:52:47,869 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 719 selfloop transitions, 794 changer transitions 12/1534 dead transitions. [2025-02-06 18:52:47,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1534 transitions, 28746 flow [2025-02-06 18:52:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-02-06 18:52:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2025-02-06 18:52:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 974 transitions. [2025-02-06 18:52:47,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3170572916666667 [2025-02-06 18:52:47,872 INFO L175 Difference]: Start difference. First operand has 465 places, 973 transitions, 17636 flow. Second operand 64 states and 974 transitions. [2025-02-06 18:52:47,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1534 transitions, 28746 flow [2025-02-06 18:52:51,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1534 transitions, 26929 flow, removed 244 selfloop flow, removed 51 redundant places. [2025-02-06 18:52:51,209 INFO L231 Difference]: Finished difference. Result has 489 places, 1175 transitions, 22338 flow [2025-02-06 18:52:51,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=15772, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=22338, PETRI_PLACES=489, PETRI_TRANSITIONS=1175} [2025-02-06 18:52:51,210 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 443 predicate places. [2025-02-06 18:52:51,210 INFO L471 AbstractCegarLoop]: Abstraction has has 489 places, 1175 transitions, 22338 flow [2025-02-06 18:52:51,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.0) internal successors, (462), 42 states have internal predecessors, (462), 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 18:52:51,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:51,211 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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] [2025-02-06 18:52:51,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 18:52:51,411 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,SelfDestructingSolverStorable24 [2025-02-06 18:52:51,411 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:51,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -704646395, now seen corresponding path program 3 times [2025-02-06 18:52:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21909934] [2025-02-06 18:52:51,412 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:52:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:51,416 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-02-06 18:52:51,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 39 statements. [2025-02-06 18:52:51,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 18:52:51,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:52:51,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:51,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21909934] [2025-02-06 18:52:51,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21909934] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:51,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574924491] [2025-02-06 18:52:51,568 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:52:51,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:51,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:51,573 INFO L229 MonitoredProcess]: Starting monitored process 17 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 18:52:51,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 18:52:51,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-02-06 18:52:51,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 39 statements. [2025-02-06 18:52:51,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 18:52:51,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:51,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 18:52:51,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:52:51,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:51,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:52:51,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-02-06 18:52:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:52:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574924491] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:51,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:51,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2025-02-06 18:52:51,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586319603] [2025-02-06 18:52:51,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:51,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 18:52:51,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:51,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 18:52:51,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-02-06 18:52:51,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-02-06 18:52:51,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1175 transitions, 22338 flow. Second operand has 27 states, 27 states have (on average 13.37037037037037) internal successors, (361), 27 states have internal predecessors, (361), 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 18:52:51,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:51,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-02-06 18:52:51,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:00,915 INFO L124 PetriNetUnfolderBase]: 15019/27422 cut-off events. [2025-02-06 18:53:00,916 INFO L125 PetriNetUnfolderBase]: For 646857/646857 co-relation queries the response was YES. [2025-02-06 18:53:01,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202605 conditions, 27422 events. 15019/27422 cut-off events. For 646857/646857 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 224364 event pairs, 1107 based on Foata normal form. 278/27609 useless extension candidates. Maximal degree in co-relation 202489. Up to 6608 conditions per place. [2025-02-06 18:53:01,295 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 973 selfloop transitions, 1101 changer transitions 24/2107 dead transitions. [2025-02-06 18:53:01,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 2107 transitions, 41118 flow [2025-02-06 18:53:01,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-02-06 18:53:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2025-02-06 18:53:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 1322 transitions. [2025-02-06 18:53:01,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3721846846846847 [2025-02-06 18:53:01,299 INFO L175 Difference]: Start difference. First operand has 489 places, 1175 transitions, 22338 flow. Second operand 74 states and 1322 transitions. [2025-02-06 18:53:01,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 2107 transitions, 41118 flow [2025-02-06 18:53:08,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 2107 transitions, 40288 flow, removed 230 selfloop flow, removed 29 redundant places. [2025-02-06 18:53:08,314 INFO L231 Difference]: Finished difference. Result has 547 places, 1543 transitions, 32581 flow [2025-02-06 18:53:08,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=21550, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=725, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=32581, PETRI_PLACES=547, PETRI_TRANSITIONS=1543} [2025-02-06 18:53:08,315 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 501 predicate places. [2025-02-06 18:53:08,315 INFO L471 AbstractCegarLoop]: Abstraction has has 547 places, 1543 transitions, 32581 flow [2025-02-06 18:53:08,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 13.37037037037037) internal successors, (361), 27 states have internal predecessors, (361), 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 18:53:08,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:08,316 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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] [2025-02-06 18:53:08,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 18:53:08,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:08,516 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:53:08,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash -232973247, now seen corresponding path program 4 times [2025-02-06 18:53:08,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:08,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331478101] [2025-02-06 18:53:08,517 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:53:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:08,522 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-06 18:53:08,528 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:53:08,528 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:53:08,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:53:08,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:08,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331478101] [2025-02-06 18:53:08,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331478101] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:08,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217743300] [2025-02-06 18:53:08,700 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:53:08,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:08,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:08,702 INFO L229 MonitoredProcess]: Starting monitored process 18 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 18:53:08,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 18:53:08,744 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-06 18:53:08,759 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:53:08,759 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:53:08,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:08,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 18:53:08,762 INFO L279 TraceCheckSpWp]: Computing forward predicates...