./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-2.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-queue-add-2.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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:53:55,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:53:55,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:53:55,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:53:55,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:53:55,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:53:55,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:53:55,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:53:55,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:53:55,256 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:53:55,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:53:55,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:53:55,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:53:55,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:53:55,258 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:53:55,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:53:55,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:53:55,259 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:53:55,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:53:55,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:53:55,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:53:55,260 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:53:55,261 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:53:55,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:53:55,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:53:55,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:53:55,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:55,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:53:55,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:53:55,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:53:55,263 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 -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2025-02-06 18:53:55,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:53:55,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:53:55,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:53:55,563 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:53:55,563 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:53:55,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2025-02-06 18:53:56,810 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a569bc9b/ba34436ceb1e4dd0a55dff41f566a143/FLAG49a082a48 [2025-02-06 18:53:57,086 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:53:57,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2025-02-06 18:53:57,095 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a569bc9b/ba34436ceb1e4dd0a55dff41f566a143/FLAG49a082a48 [2025-02-06 18:53:57,406 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a569bc9b/ba34436ceb1e4dd0a55dff41f566a143 [2025-02-06 18:53:57,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:53:57,409 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:53:57,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:57,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:53:57,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:53:57,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b640b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57, skipping insertion in model container [2025-02-06 18:53:57,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:53:57,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:57,570 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:53:57,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:57,600 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:53:57,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57 WrapperNode [2025-02-06 18:53:57,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:57,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:57,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:53:57,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:53:57,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,648 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 154 [2025-02-06 18:53:57,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:57,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:53:57,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:53:57,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:53:57,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,673 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 18:53:57,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,678 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:53:57,684 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:53:57,684 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:53:57,684 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:53:57,685 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (1/1) ... [2025-02-06 18:53:57,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:57,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:57,710 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 18:53:57,712 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 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:53:57,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:53:57,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:53:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:53:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:53:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:53:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:53:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:53:57,730 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 18:53:57,818 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:53:57,820 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:53:58,145 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:53:58,145 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:53:58,406 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:53:58,407 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:53:58,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:58 BoogieIcfgContainer [2025-02-06 18:53:58,408 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:53:58,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:53:58,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:53:58,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:53:58,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:53:57" (1/3) ... [2025-02-06 18:53:58,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546e4dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:58, skipping insertion in model container [2025-02-06 18:53:58,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:57" (2/3) ... [2025-02-06 18:53:58,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546e4dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:58, skipping insertion in model container [2025-02-06 18:53:58,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:58" (3/3) ... [2025-02-06 18:53:58,420 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2025-02-06 18:53:58,434 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:53:58,435 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-2.wvr.c that has 3 procedures, 41 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-02-06 18:53:58,436 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:53:58,506 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:53:58,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 102 flow [2025-02-06 18:53:58,579 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2025-02-06 18:53:58,581 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:53:58,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 109 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-06 18:53:58,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 102 flow [2025-02-06 18:53:58,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 89 flow [2025-02-06 18:53:58,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:53:58,622 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;@3b96edd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:53:58,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2025-02-06 18:53:58,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:53:58,630 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:53:58,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:53:58,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:58,631 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:53:58,632 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:53:58,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash 434977, now seen corresponding path program 1 times [2025-02-06 18:53:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:58,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235917168] [2025-02-06 18:53:58,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:58,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:58,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:53:58,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:53:58,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:58,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:58,870 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 18:53:58,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:58,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235917168] [2025-02-06 18:53:58,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235917168] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:58,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:58,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:58,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968058917] [2025-02-06 18:53:58,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:58,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:58,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:58,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:58,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-06 18:53:58,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 18:53:58,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:58,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-06 18:53:58,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:59,095 INFO L124 PetriNetUnfolderBase]: 159/326 cut-off events. [2025-02-06 18:53:59,095 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-06 18:53:59,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 326 events. 159/326 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1485 event pairs, 136 based on Foata normal form. 18/254 useless extension candidates. Maximal degree in co-relation 575. Up to 276 conditions per place. [2025-02-06 18:53:59,103 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 23 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2025-02-06 18:53:59,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 141 flow [2025-02-06 18:53:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-02-06 18:53:59,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2025-02-06 18:53:59,120 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 89 flow. Second operand 4 states and 89 transitions. [2025-02-06 18:53:59,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 141 flow [2025-02-06 18:53:59,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:53:59,128 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 105 flow [2025-02-06 18:53:59,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2025-02-06 18:53:59,136 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2025-02-06 18:53:59,136 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 105 flow [2025-02-06 18:53:59,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 18:53:59,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:59,137 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:53:59,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:53:59,137 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:53:59,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 73881963, now seen corresponding path program 1 times [2025-02-06 18:53:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556143765] [2025-02-06 18:53:59,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:59,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:53:59,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:53:59,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:59,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:59,334 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 18:53:59,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556143765] [2025-02-06 18:53:59,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556143765] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:59,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588480621] [2025-02-06 18:53:59,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:59,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:59,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:59,338 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 18:53:59,341 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 18:53:59,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:53:59,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:53:59,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:59,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:59,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:59,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:59,461 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 18:53:59,462 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:53:59,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588480621] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:59,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:53:59,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:53:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950607972] [2025-02-06 18:53:59,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:59,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:53:59,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:59,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:53:59,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:53:59,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-06 18:53:59,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 18:53:59,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:59,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-06 18:53:59,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:59,643 INFO L124 PetriNetUnfolderBase]: 159/325 cut-off events. [2025-02-06 18:53:59,643 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:53:59,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 325 events. 159/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1485 event pairs, 136 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 607. Up to 271 conditions per place. [2025-02-06 18:53:59,668 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 19 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2025-02-06 18:53:59,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 153 flow [2025-02-06 18:53:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:53:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:53:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-02-06 18:53:59,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2025-02-06 18:53:59,671 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 105 flow. Second operand 6 states and 111 transitions. [2025-02-06 18:53:59,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 153 flow [2025-02-06 18:53:59,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:59,673 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 112 flow [2025-02-06 18:53:59,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2025-02-06 18:53:59,675 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2025-02-06 18:53:59,675 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 112 flow [2025-02-06 18:53:59,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 18:53:59,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:59,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:53:59,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 18:53:59,879 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 18:53:59,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:53:59,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 76900072, now seen corresponding path program 1 times [2025-02-06 18:53:59,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:59,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133965221] [2025-02-06 18:53:59,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:59,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:53:59,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:53:59,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:59,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:59,992 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 18:53:59,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:59,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133965221] [2025-02-06 18:53:59,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133965221] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:59,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:59,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:59,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699024135] [2025-02-06 18:53:59,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:59,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:59,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:59,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:59,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:59,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:53:59,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 112 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 18:53:59,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:59,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:53:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:00,108 INFO L124 PetriNetUnfolderBase]: 171/360 cut-off events. [2025-02-06 18:54:00,108 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 18:54:00,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 360 events. 171/360 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1622 event pairs, 149 based on Foata normal form. 14/295 useless extension candidates. Maximal degree in co-relation 609. Up to 273 conditions per place. [2025-02-06 18:54:00,114 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 22 selfloop transitions, 2 changer transitions 8/45 dead transitions. [2025-02-06 18:54:00,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 193 flow [2025-02-06 18:54:00,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-02-06 18:54:00,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5795454545454546 [2025-02-06 18:54:00,118 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 112 flow. Second operand 4 states and 102 transitions. [2025-02-06 18:54:00,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 193 flow [2025-02-06 18:54:00,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 171 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-06 18:54:00,121 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2025-02-06 18:54:00,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2025-02-06 18:54:00,122 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2025-02-06 18:54:00,122 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2025-02-06 18:54:00,122 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 18:54:00,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:00,123 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:54:00,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:54:00,123 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:00,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2004626058, now seen corresponding path program 1 times [2025-02-06 18:54:00,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925020676] [2025-02-06 18:54:00,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:00,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:00,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:54:00,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:54:00,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:00,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:00,228 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 18:54:00,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:00,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925020676] [2025-02-06 18:54:00,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925020676] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:00,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002448981] [2025-02-06 18:54:00,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:00,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:00,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:00,232 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 18:54:00,234 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 18:54:00,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:54:00,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:54:00,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:00,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:00,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:54:00,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:00,324 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 18:54:00,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:00,378 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 18:54:00,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002448981] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:00,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:00,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:54:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865957983] [2025-02-06 18:54:00,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:00,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:54:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:00,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:54:00,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:54:00,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-06 18:54:00,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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 18:54:00,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:00,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-06 18:54:00,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:00,589 INFO L124 PetriNetUnfolderBase]: 161/336 cut-off events. [2025-02-06 18:54:00,590 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-02-06 18:54:00,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 336 events. 161/336 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1549 event pairs, 136 based on Foata normal form. 3/248 useless extension candidates. Maximal degree in co-relation 729. Up to 277 conditions per place. [2025-02-06 18:54:00,592 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2025-02-06 18:54:00,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 202 flow [2025-02-06 18:54:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:54:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:54:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2025-02-06 18:54:00,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2025-02-06 18:54:00,594 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 10 states and 177 transitions. [2025-02-06 18:54:00,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 202 flow [2025-02-06 18:54:00,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:00,596 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 172 flow [2025-02-06 18:54:00,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2025-02-06 18:54:00,597 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2025-02-06 18:54:00,597 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 172 flow [2025-02-06 18:54:00,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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 18:54:00,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:00,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:00,606 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 18:54:00,802 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 18:54:00,802 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:00,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1997706334, now seen corresponding path program 1 times [2025-02-06 18:54:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:00,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842506925] [2025-02-06 18:54:00,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:00,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:00,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:54:00,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:54:00,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:00,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:00,964 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 18:54:00,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:00,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842506925] [2025-02-06 18:54:00,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842506925] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:00,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135115363] [2025-02-06 18:54:00,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:00,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:00,967 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 18:54:00,970 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 18:54:01,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:54:01,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:54:01,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:01,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:01,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:54:01,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:01,048 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 18:54:01,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:54:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135115363] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:01,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:54:01,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-06 18:54:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133212592] [2025-02-06 18:54:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:01,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:01,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:01,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:54:01,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:54:01,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 172 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 18:54:01,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:01,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:54:01,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:01,095 INFO L124 PetriNetUnfolderBase]: 104/228 cut-off events. [2025-02-06 18:54:01,095 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2025-02-06 18:54:01,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 228 events. 104/228 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 891 event pairs, 83 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 470. Up to 187 conditions per place. [2025-02-06 18:54:01,097 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 29 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2025-02-06 18:54:01,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 220 flow [2025-02-06 18:54:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-02-06 18:54:01,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2025-02-06 18:54:01,098 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 172 flow. Second operand 3 states and 70 transitions. [2025-02-06 18:54:01,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 220 flow [2025-02-06 18:54:01,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 210 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:01,100 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 152 flow [2025-02-06 18:54:01,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2025-02-06 18:54:01,101 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2025-02-06 18:54:01,101 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 152 flow [2025-02-06 18:54:01,101 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 18:54:01,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:01,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:01,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:54:01,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:01,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:01,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash -54579454, now seen corresponding path program 1 times [2025-02-06 18:54:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:01,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814344341] [2025-02-06 18:54:01,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:01,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:54:01,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:54:01,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:01,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:01,364 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 18:54:01,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:01,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814344341] [2025-02-06 18:54:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814344341] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:01,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060966919] [2025-02-06 18:54:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:01,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:01,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:01,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:01,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-06 18:54:01,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 18:54:01,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:01,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-06 18:54:01,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:01,527 INFO L124 PetriNetUnfolderBase]: 216/449 cut-off events. [2025-02-06 18:54:01,527 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-02-06 18:54:01,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 449 events. 216/449 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1999 event pairs, 109 based on Foata normal form. 12/418 useless extension candidates. Maximal degree in co-relation 921. Up to 281 conditions per place. [2025-02-06 18:54:01,534 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2025-02-06 18:54:01,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 300 flow [2025-02-06 18:54:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-02-06 18:54:01,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2025-02-06 18:54:01,539 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 152 flow. Second operand 4 states and 94 transitions. [2025-02-06 18:54:01,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 300 flow [2025-02-06 18:54:01,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:01,541 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 180 flow [2025-02-06 18:54:01,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=180, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2025-02-06 18:54:01,545 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2025-02-06 18:54:01,546 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 180 flow [2025-02-06 18:54:01,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 18:54:01,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:01,546 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:01,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:54:01,546 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:01,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1569889557, now seen corresponding path program 1 times [2025-02-06 18:54:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:01,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431193924] [2025-02-06 18:54:01,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:01,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:01,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:54:01,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:54:01,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:01,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:01,595 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 18:54:01,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:01,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431193924] [2025-02-06 18:54:01,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431193924] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:01,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:01,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:01,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276705839] [2025-02-06 18:54:01,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:01,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:01,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:01,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:01,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:54:01,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:54:01,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 18:54:01,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:01,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:54:01,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:01,668 INFO L124 PetriNetUnfolderBase]: 133/332 cut-off events. [2025-02-06 18:54:01,668 INFO L125 PetriNetUnfolderBase]: For 114/129 co-relation queries the response was YES. [2025-02-06 18:54:01,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 332 events. 133/332 cut-off events. For 114/129 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1522 event pairs, 40 based on Foata normal form. 7/307 useless extension candidates. Maximal degree in co-relation 750. Up to 184 conditions per place. [2025-02-06 18:54:01,670 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 35 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2025-02-06 18:54:01,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 274 flow [2025-02-06 18:54:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2025-02-06 18:54:01,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2025-02-06 18:54:01,671 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 180 flow. Second operand 3 states and 75 transitions. [2025-02-06 18:54:01,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 274 flow [2025-02-06 18:54:01,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:01,674 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 200 flow [2025-02-06 18:54:01,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2025-02-06 18:54:01,674 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2025-02-06 18:54:01,674 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 200 flow [2025-02-06 18:54:01,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 18:54:01,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:01,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:01,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:54:01,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:01,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:01,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1186613755, now seen corresponding path program 1 times [2025-02-06 18:54:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190152211] [2025-02-06 18:54:01,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:01,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:54:01,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:54:01,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:01,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:02,298 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 18:54:02,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190152211] [2025-02-06 18:54:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190152211] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379157454] [2025-02-06 18:54:02,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:02,302 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 18:54:02,304 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 18:54:02,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:54:02,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:54:02,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:02,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:02,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 18:54:02,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:02,443 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 18:54:02,705 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 18:54:02,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:03,256 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 41 treesize of output 37 [2025-02-06 18:54:03,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:03,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 52 treesize of output 48 [2025-02-06 18:54:03,416 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 18:54:03,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379157454] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:03,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:03,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-02-06 18:54:03,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882097051] [2025-02-06 18:54:03,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:03,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:54:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:03,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:54:03,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:54:03,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-06 18:54:03,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 200 flow. Second operand has 20 states, 20 states have (on average 11.8) internal successors, (236), 20 states have internal predecessors, (236), 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 18:54:03,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:03,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-06 18:54:03,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:05,199 INFO L124 PetriNetUnfolderBase]: 951/2003 cut-off events. [2025-02-06 18:54:05,200 INFO L125 PetriNetUnfolderBase]: For 1192/1369 co-relation queries the response was YES. [2025-02-06 18:54:05,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4934 conditions, 2003 events. 951/2003 cut-off events. For 1192/1369 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12004 event pairs, 102 based on Foata normal form. 96/1985 useless extension candidates. Maximal degree in co-relation 4918. Up to 336 conditions per place. [2025-02-06 18:54:05,221 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 164 selfloop transitions, 45 changer transitions 0/218 dead transitions. [2025-02-06 18:54:05,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 218 transitions, 1215 flow [2025-02-06 18:54:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 18:54:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-06 18:54:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 447 transitions. [2025-02-06 18:54:05,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2025-02-06 18:54:05,224 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 200 flow. Second operand 24 states and 447 transitions. [2025-02-06 18:54:05,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 218 transitions, 1215 flow [2025-02-06 18:54:05,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 218 transitions, 1124 flow, removed 41 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:05,231 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 531 flow [2025-02-06 18:54:05,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=531, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2025-02-06 18:54:05,232 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2025-02-06 18:54:05,232 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 531 flow [2025-02-06 18:54:05,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.8) internal successors, (236), 20 states have internal predecessors, (236), 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 18:54:05,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:05,233 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:54:05,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:54:05,436 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 18:54:05,437 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:05,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:05,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2145041152, now seen corresponding path program 2 times [2025-02-06 18:54:05,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:05,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367876581] [2025-02-06 18:54:05,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:05,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:05,446 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:54:05,451 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:54:05,451 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:05,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:05,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:05,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367876581] [2025-02-06 18:54:05,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367876581] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:05,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327128910] [2025-02-06 18:54:05,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:05,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:05,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:05,530 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 18:54:05,533 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 18:54:05,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:54:05,591 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:54:05,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:05,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:05,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:54:05,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:05,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327128910] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:05,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:05,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:54:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923732933] [2025-02-06 18:54:05,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:05,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:05,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:05,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:05,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:05,642 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-06 18:54:05,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 18:54:05,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:05,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-06 18:54:05,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:05,859 INFO L124 PetriNetUnfolderBase]: 662/1446 cut-off events. [2025-02-06 18:54:05,859 INFO L125 PetriNetUnfolderBase]: For 5765/5929 co-relation queries the response was YES. [2025-02-06 18:54:05,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4934 conditions, 1446 events. 662/1446 cut-off events. For 5765/5929 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8516 event pairs, 418 based on Foata normal form. 35/1364 useless extension candidates. Maximal degree in co-relation 4904. Up to 1108 conditions per place. [2025-02-06 18:54:05,874 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 52 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2025-02-06 18:54:05,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 655 flow [2025-02-06 18:54:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-06 18:54:05,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2025-02-06 18:54:05,876 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 531 flow. Second operand 4 states and 76 transitions. [2025-02-06 18:54:05,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 655 flow [2025-02-06 18:54:05,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 618 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-02-06 18:54:05,895 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 514 flow [2025-02-06 18:54:05,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=514, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2025-02-06 18:54:05,896 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2025-02-06 18:54:05,897 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 514 flow [2025-02-06 18:54:05,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 18:54:05,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:05,897 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:05,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:54:06,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:06,098 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:06,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash 243911326, now seen corresponding path program 1 times [2025-02-06 18:54:06,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:06,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384252449] [2025-02-06 18:54:06,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:06,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:06,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:54:06,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:54:06,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:06,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:06,549 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 18:54:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384252449] [2025-02-06 18:54:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384252449] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046073336] [2025-02-06 18:54:06,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:06,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:06,552 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 18:54:06,554 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 18:54:06,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:54:06,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:54:06,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:06,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:06,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 18:54:06,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:06,649 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 18:54:06,876 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 18:54:06,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:07,221 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 40 treesize of output 36 [2025-02-06 18:54:07,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:07,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 50 treesize of output 46 [2025-02-06 18:54:07,339 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 18:54:07,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046073336] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:07,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2025-02-06 18:54:07,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463465378] [2025-02-06 18:54:07,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:07,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:54:07,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:07,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:54:07,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:54:07,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-06 18:54:07,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 514 flow. Second operand has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 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 18:54:07,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:07,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-06 18:54:07,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:08,787 INFO L124 PetriNetUnfolderBase]: 1058/2271 cut-off events. [2025-02-06 18:54:08,787 INFO L125 PetriNetUnfolderBase]: For 8314/8513 co-relation queries the response was YES. [2025-02-06 18:54:08,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7567 conditions, 2271 events. 1058/2271 cut-off events. For 8314/8513 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13943 event pairs, 238 based on Foata normal form. 124/2364 useless extension candidates. Maximal degree in co-relation 7540. Up to 1189 conditions per place. [2025-02-06 18:54:08,801 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 131 selfloop transitions, 39 changer transitions 0/182 dead transitions. [2025-02-06 18:54:08,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 182 transitions, 1406 flow [2025-02-06 18:54:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 18:54:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 18:54:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 353 transitions. [2025-02-06 18:54:08,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4011363636363636 [2025-02-06 18:54:08,804 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 514 flow. Second operand 20 states and 353 transitions. [2025-02-06 18:54:08,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 182 transitions, 1406 flow [2025-02-06 18:54:08,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 182 transitions, 1376 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:08,825 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 789 flow [2025-02-06 18:54:08,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=789, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2025-02-06 18:54:08,825 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2025-02-06 18:54:08,825 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 789 flow [2025-02-06 18:54:08,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 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 18:54:08,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:08,826 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:08,834 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 18:54:09,026 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,SelfDestructingSolverStorable9 [2025-02-06 18:54:09,027 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:09,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1897665054, now seen corresponding path program 1 times [2025-02-06 18:54:09,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:09,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468808976] [2025-02-06 18:54:09,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:09,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:54:09,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:54:09,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:09,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468808976] [2025-02-06 18:54:09,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468808976] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100268902] [2025-02-06 18:54:09,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:09,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:09,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:09,163 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 18:54:09,165 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 18:54:09,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:54:09,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:54:09,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:09,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:09,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 18:54:09,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100268902] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:09,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:09,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-06 18:54:09,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254450143] [2025-02-06 18:54:09,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:09,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:54:09,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:09,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:54:09,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:54:09,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-06 18:54:09,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 789 flow. Second operand has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 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 18:54:09,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:09,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-06 18:54:09,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:09,682 INFO L124 PetriNetUnfolderBase]: 478/1084 cut-off events. [2025-02-06 18:54:09,683 INFO L125 PetriNetUnfolderBase]: For 7704/7809 co-relation queries the response was YES. [2025-02-06 18:54:09,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 1084 events. 478/1084 cut-off events. For 7704/7809 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6458 event pairs, 295 based on Foata normal form. 83/1098 useless extension candidates. Maximal degree in co-relation 4024. Up to 587 conditions per place. [2025-02-06 18:54:09,691 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 54 selfloop transitions, 13 changer transitions 1/83 dead transitions. [2025-02-06 18:54:09,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 645 flow [2025-02-06 18:54:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:54:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:54:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2025-02-06 18:54:09,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2025-02-06 18:54:09,693 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 789 flow. Second operand 8 states and 158 transitions. [2025-02-06 18:54:09,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 645 flow [2025-02-06 18:54:09,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 83 transitions, 603 flow, removed 10 selfloop flow, removed 15 redundant places. [2025-02-06 18:54:09,709 INFO L231 Difference]: Finished difference. Result has 94 places, 67 transitions, 453 flow [2025-02-06 18:54:09,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=453, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2025-02-06 18:54:09,712 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2025-02-06 18:54:09,712 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 453 flow [2025-02-06 18:54:09,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 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 18:54:09,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:09,712 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:09,723 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 18:54:09,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:09,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:09,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1054616709, now seen corresponding path program 1 times [2025-02-06 18:54:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170366871] [2025-02-06 18:54:09,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:09,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:54:09,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:54:09,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:09,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:10,473 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 18:54:10,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:10,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170366871] [2025-02-06 18:54:10,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170366871] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:10,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916702780] [2025-02-06 18:54:10,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:10,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:10,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:10,477 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 18:54:10,478 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 18:54:10,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:54:10,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:54:10,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:10,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:10,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 18:54:10,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:10,673 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 18:54:10,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:10,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:10,721 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 27 treesize of output 19 [2025-02-06 18:54:10,798 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 18:54:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916702780] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:10,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:54:10,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 16 [2025-02-06 18:54:10,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85658198] [2025-02-06 18:54:10,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:10,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:10,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:10,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:10,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:54:10,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-06 18:54:10,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 453 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 18:54:10,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:10,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-06 18:54:10,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:11,013 INFO L124 PetriNetUnfolderBase]: 662/1440 cut-off events. [2025-02-06 18:54:11,014 INFO L125 PetriNetUnfolderBase]: For 5865/5949 co-relation queries the response was YES. [2025-02-06 18:54:11,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 1440 events. 662/1440 cut-off events. For 5865/5949 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8653 event pairs, 52 based on Foata normal form. 68/1504 useless extension candidates. Maximal degree in co-relation 4881. Up to 395 conditions per place. [2025-02-06 18:54:11,024 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 58 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2025-02-06 18:54:11,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 761 flow [2025-02-06 18:54:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2025-02-06 18:54:11,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2025-02-06 18:54:11,025 INFO L175 Difference]: Start difference. First operand has 94 places, 67 transitions, 453 flow. Second operand 5 states and 107 transitions. [2025-02-06 18:54:11,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 761 flow [2025-02-06 18:54:11,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 704 flow, removed 9 selfloop flow, removed 10 redundant places. [2025-02-06 18:54:11,041 INFO L231 Difference]: Finished difference. Result has 91 places, 70 transitions, 517 flow [2025-02-06 18:54:11,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=91, PETRI_TRANSITIONS=70} [2025-02-06 18:54:11,043 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2025-02-06 18:54:11,044 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 70 transitions, 517 flow [2025-02-06 18:54:11,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 18:54:11,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:11,044 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:11,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 18:54:11,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:11,245 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:11,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1860560218, now seen corresponding path program 1 times [2025-02-06 18:54:11,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:11,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143184755] [2025-02-06 18:54:11,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:11,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:11,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:54:11,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:54:11,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:11,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:11,731 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 18:54:11,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:11,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143184755] [2025-02-06 18:54:11,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143184755] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:11,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65924404] [2025-02-06 18:54:11,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:11,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:11,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:11,734 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 18:54:11,737 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 18:54:11,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:54:11,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:54:11,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:11,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:11,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 18:54:11,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:11,934 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 18:54:11,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:11,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:11,976 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 18:54:12,036 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 18:54:12,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65924404] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:12,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:54:12,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 16 [2025-02-06 18:54:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480227238] [2025-02-06 18:54:12,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:12,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:12,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:12,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:12,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:54:12,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-06 18:54:12,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 70 transitions, 517 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 18:54:12,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:12,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-06 18:54:12,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:12,247 INFO L124 PetriNetUnfolderBase]: 619/1403 cut-off events. [2025-02-06 18:54:12,247 INFO L125 PetriNetUnfolderBase]: For 6008/6078 co-relation queries the response was YES. [2025-02-06 18:54:12,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5033 conditions, 1403 events. 619/1403 cut-off events. For 6008/6078 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8742 event pairs, 169 based on Foata normal form. 50/1426 useless extension candidates. Maximal degree in co-relation 5001. Up to 814 conditions per place. [2025-02-06 18:54:12,259 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 62 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2025-02-06 18:54:12,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 769 flow [2025-02-06 18:54:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-02-06 18:54:12,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 18:54:12,260 INFO L175 Difference]: Start difference. First operand has 91 places, 70 transitions, 517 flow. Second operand 5 states and 110 transitions. [2025-02-06 18:54:12,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 769 flow [2025-02-06 18:54:12,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 740 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:12,277 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 555 flow [2025-02-06 18:54:12,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=555, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2025-02-06 18:54:12,278 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2025-02-06 18:54:12,278 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 555 flow [2025-02-06 18:54:12,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 18:54:12,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:12,279 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:12,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:54:12,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:12,484 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:12,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:12,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2144377836, now seen corresponding path program 2 times [2025-02-06 18:54:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:12,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949307842] [2025-02-06 18:54:12,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:12,490 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 18:54:12,494 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:54:12,495 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:12,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:54:12,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:12,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949307842] [2025-02-06 18:54:12,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949307842] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:12,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:12,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:54:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039794274] [2025-02-06 18:54:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:12,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:12,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:12,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:54:12,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-06 18:54:12,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 18:54:12,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:12,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-06 18:54:12,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:12,722 INFO L124 PetriNetUnfolderBase]: 758/1576 cut-off events. [2025-02-06 18:54:12,723 INFO L125 PetriNetUnfolderBase]: For 7005/7086 co-relation queries the response was YES. [2025-02-06 18:54:12,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5717 conditions, 1576 events. 758/1576 cut-off events. For 7005/7086 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9549 event pairs, 237 based on Foata normal form. 39/1543 useless extension candidates. Maximal degree in co-relation 5682. Up to 528 conditions per place. [2025-02-06 18:54:12,734 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 87 selfloop transitions, 7 changer transitions 1/107 dead transitions. [2025-02-06 18:54:12,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 1017 flow [2025-02-06 18:54:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-06 18:54:12,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2025-02-06 18:54:12,736 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 555 flow. Second operand 4 states and 85 transitions. [2025-02-06 18:54:12,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 1017 flow [2025-02-06 18:54:12,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 107 transitions, 987 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:12,750 INFO L231 Difference]: Finished difference. Result has 94 places, 71 transitions, 543 flow [2025-02-06 18:54:12,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=543, PETRI_PLACES=94, PETRI_TRANSITIONS=71} [2025-02-06 18:54:12,751 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2025-02-06 18:54:12,751 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 71 transitions, 543 flow [2025-02-06 18:54:12,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 18:54:12,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:12,751 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:12,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:54:12,751 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:12,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2051203068, now seen corresponding path program 1 times [2025-02-06 18:54:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159110174] [2025-02-06 18:54:12,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:12,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:54:12,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:12,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:12,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:54:12,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:12,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159110174] [2025-02-06 18:54:12,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159110174] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904007326] [2025-02-06 18:54:12,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:12,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:12,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:12,805 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 18:54:12,808 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 18:54:12,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:54:12,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:12,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:12,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:54:12,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:54:12,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:54:12,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904007326] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:12,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:12,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:54:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245058915] [2025-02-06 18:54:12,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:12,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:54:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:12,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:54:12,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:54:12,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-06 18:54:12,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 71 transitions, 543 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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 18:54:12,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:12,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-06 18:54:12,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:13,391 INFO L124 PetriNetUnfolderBase]: 1141/2454 cut-off events. [2025-02-06 18:54:13,392 INFO L125 PetriNetUnfolderBase]: For 13151/13448 co-relation queries the response was YES. [2025-02-06 18:54:13,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9555 conditions, 2454 events. 1141/2454 cut-off events. For 13151/13448 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15325 event pairs, 329 based on Foata normal form. 122/2503 useless extension candidates. Maximal degree in co-relation 9522. Up to 962 conditions per place. [2025-02-06 18:54:13,411 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 166 selfloop transitions, 13 changer transitions 0/192 dead transitions. [2025-02-06 18:54:13,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 192 transitions, 1801 flow [2025-02-06 18:54:13,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:54:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:54:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2025-02-06 18:54:13,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2025-02-06 18:54:13,413 INFO L175 Difference]: Start difference. First operand has 94 places, 71 transitions, 543 flow. Second operand 10 states and 226 transitions. [2025-02-06 18:54:13,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 192 transitions, 1801 flow [2025-02-06 18:54:13,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1769 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:13,434 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 609 flow [2025-02-06 18:54:13,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2025-02-06 18:54:13,436 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2025-02-06 18:54:13,436 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 609 flow [2025-02-06 18:54:13,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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 18:54:13,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:13,436 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:13,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:13,637 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,SelfDestructingSolverStorable14 [2025-02-06 18:54:13,637 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:13,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:13,638 INFO L85 PathProgramCache]: Analyzing trace with hash -831015591, now seen corresponding path program 1 times [2025-02-06 18:54:13,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:13,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428274519] [2025-02-06 18:54:13,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:13,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:13,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:54:13,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:13,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:13,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:13,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428274519] [2025-02-06 18:54:13,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428274519] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322601741] [2025-02-06 18:54:13,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:13,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:13,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:13,738 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 18:54:13,742 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 18:54:13,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:54:13,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:13,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:13,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:13,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:54:13,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:13,856 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:54:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322601741] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:54:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-06 18:54:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014165128] [2025-02-06 18:54:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:13,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:13,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:13,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:13,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:54:13,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:54:13,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 18:54:13,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:13,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:54:13,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:14,179 INFO L124 PetriNetUnfolderBase]: 1158/2795 cut-off events. [2025-02-06 18:54:14,179 INFO L125 PetriNetUnfolderBase]: For 17285/17476 co-relation queries the response was YES. [2025-02-06 18:54:14,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11406 conditions, 2795 events. 1158/2795 cut-off events. For 17285/17476 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18137 event pairs, 219 based on Foata normal form. 73/2832 useless extension candidates. Maximal degree in co-relation 11370. Up to 954 conditions per place. [2025-02-06 18:54:14,205 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 73 selfloop transitions, 12 changer transitions 13/115 dead transitions. [2025-02-06 18:54:14,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 1043 flow [2025-02-06 18:54:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:14,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-02-06 18:54:14,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-02-06 18:54:14,207 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 609 flow. Second operand 4 states and 109 transitions. [2025-02-06 18:54:14,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 1043 flow [2025-02-06 18:54:14,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 973 flow, removed 28 selfloop flow, removed 5 redundant places. [2025-02-06 18:54:14,236 INFO L231 Difference]: Finished difference. Result has 100 places, 68 transitions, 550 flow [2025-02-06 18:54:14,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=100, PETRI_TRANSITIONS=68} [2025-02-06 18:54:14,237 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2025-02-06 18:54:14,237 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 68 transitions, 550 flow [2025-02-06 18:54:14,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 18:54:14,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:14,238 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:14,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 18:54:14,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 18:54:14,438 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:14,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash -118412472, now seen corresponding path program 2 times [2025-02-06 18:54:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:14,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311831578] [2025-02-06 18:54:14,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:14,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:14,445 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 18:54:14,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:54:14,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:14,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:14,524 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 18:54:14,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:14,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311831578] [2025-02-06 18:54:14,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311831578] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:14,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:14,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:14,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833745926] [2025-02-06 18:54:14,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:14,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:14,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:14,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:54:14,545 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-06 18:54:14,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 68 transitions, 550 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 18:54:14,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:14,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-06 18:54:14,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:14,877 INFO L124 PetriNetUnfolderBase]: 1170/2630 cut-off events. [2025-02-06 18:54:14,877 INFO L125 PetriNetUnfolderBase]: For 18588/18715 co-relation queries the response was YES. [2025-02-06 18:54:14,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11051 conditions, 2630 events. 1170/2630 cut-off events. For 18588/18715 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16534 event pairs, 120 based on Foata normal form. 63/2677 useless extension candidates. Maximal degree in co-relation 11013. Up to 926 conditions per place. [2025-02-06 18:54:14,893 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 80 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2025-02-06 18:54:14,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 107 transitions, 1042 flow [2025-02-06 18:54:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-02-06 18:54:14,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2025-02-06 18:54:14,895 INFO L175 Difference]: Start difference. First operand has 100 places, 68 transitions, 550 flow. Second operand 5 states and 113 transitions. [2025-02-06 18:54:14,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 107 transitions, 1042 flow [2025-02-06 18:54:14,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 908 flow, removed 58 selfloop flow, removed 8 redundant places. [2025-02-06 18:54:14,917 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 522 flow [2025-02-06 18:54:14,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2025-02-06 18:54:14,918 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2025-02-06 18:54:14,918 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 522 flow [2025-02-06 18:54:14,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 18:54:14,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:14,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:14,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:54:14,920 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:14,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1894564077, now seen corresponding path program 1 times [2025-02-06 18:54:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78772477] [2025-02-06 18:54:14,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:14,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:14,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:54:14,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:54:14,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:14,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:15,581 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 18:54:15,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:15,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78772477] [2025-02-06 18:54:15,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78772477] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:15,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666991524] [2025-02-06 18:54:15,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:15,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:15,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:15,584 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 18:54:15,586 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 18:54:15,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:54:15,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:54:15,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:15,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:15,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-06 18:54:15,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:15,782 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 15 treesize of output 1 [2025-02-06 18:54:16,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:16,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2025-02-06 18:54:16,299 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 18:54:16,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:16,807 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 18:54:16,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:16,820 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 18:54:17,254 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 18:54:17,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666991524] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:17,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:17,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2025-02-06 18:54:17,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957532221] [2025-02-06 18:54:17,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:17,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 18:54:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:17,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 18:54:17,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 18:54:17,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-06 18:54:17,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 522 flow. Second operand has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 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 18:54:17,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:17,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-06 18:54:17,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:20,088 INFO L124 PetriNetUnfolderBase]: 1808/3674 cut-off events. [2025-02-06 18:54:20,089 INFO L125 PetriNetUnfolderBase]: For 15752/15872 co-relation queries the response was YES. [2025-02-06 18:54:20,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13894 conditions, 3674 events. 1808/3674 cut-off events. For 15752/15872 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 23869 event pairs, 299 based on Foata normal form. 213/3870 useless extension candidates. Maximal degree in co-relation 13860. Up to 1225 conditions per place. [2025-02-06 18:54:20,106 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 224 selfloop transitions, 58 changer transitions 10/303 dead transitions. [2025-02-06 18:54:20,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 303 transitions, 2523 flow [2025-02-06 18:54:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 18:54:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-02-06 18:54:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 583 transitions. [2025-02-06 18:54:20,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2025-02-06 18:54:20,109 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 522 flow. Second operand 35 states and 583 transitions. [2025-02-06 18:54:20,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 303 transitions, 2523 flow [2025-02-06 18:54:20,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 303 transitions, 2499 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:20,129 INFO L231 Difference]: Finished difference. Result has 140 places, 107 transitions, 1246 flow [2025-02-06 18:54:20,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1246, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2025-02-06 18:54:20,130 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2025-02-06 18:54:20,130 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 1246 flow [2025-02-06 18:54:20,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 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 18:54:20,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:20,130 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] [2025-02-06 18:54:20,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:20,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 18:54:20,331 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:20,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:20,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2117827712, now seen corresponding path program 1 times [2025-02-06 18:54:20,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:20,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946002910] [2025-02-06 18:54:20,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:20,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:20,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:54:20,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:54:20,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:20,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:20,938 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 18:54:20,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:20,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946002910] [2025-02-06 18:54:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946002910] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940969362] [2025-02-06 18:54:20,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:20,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:20,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:20,941 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 18:54:20,943 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 18:54:20,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:54:21,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:54:21,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:21,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:21,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-06 18:54:21,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:21,445 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 18:54:21,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:21,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 18:54:21,482 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 18:54:21,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:21,747 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-02-06 18:54:21,747 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 48 treesize of output 43 [2025-02-06 18:54:22,366 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 18:54:22,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940969362] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:22,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:22,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2025-02-06 18:54:22,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865776596] [2025-02-06 18:54:22,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:22,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 18:54:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:22,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 18:54:22,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 18:54:22,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-06 18:54:22,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 1246 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 18:54:22,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:22,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-06 18:54:22,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:24,395 INFO L124 PetriNetUnfolderBase]: 1646/3490 cut-off events. [2025-02-06 18:54:24,395 INFO L125 PetriNetUnfolderBase]: For 36869/37052 co-relation queries the response was YES. [2025-02-06 18:54:24,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16984 conditions, 3490 events. 1646/3490 cut-off events. For 36869/37052 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 23421 event pairs, 758 based on Foata normal form. 38/3457 useless extension candidates. Maximal degree in co-relation 16930. Up to 1997 conditions per place. [2025-02-06 18:54:24,420 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 133 selfloop transitions, 26 changer transitions 32/210 dead transitions. [2025-02-06 18:54:24,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 210 transitions, 2199 flow [2025-02-06 18:54:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 18:54:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 18:54:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 410 transitions. [2025-02-06 18:54:24,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2025-02-06 18:54:24,422 INFO L175 Difference]: Start difference. First operand has 140 places, 107 transitions, 1246 flow. Second operand 25 states and 410 transitions. [2025-02-06 18:54:24,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 210 transitions, 2199 flow [2025-02-06 18:54:24,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 210 transitions, 1973 flow, removed 92 selfloop flow, removed 13 redundant places. [2025-02-06 18:54:24,508 INFO L231 Difference]: Finished difference. Result has 155 places, 104 transitions, 1086 flow [2025-02-06 18:54:24,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1086, PETRI_PLACES=155, PETRI_TRANSITIONS=104} [2025-02-06 18:54:24,509 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 112 predicate places. [2025-02-06 18:54:24,509 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 104 transitions, 1086 flow [2025-02-06 18:54:24,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 18:54:24,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:24,510 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] [2025-02-06 18:54:24,518 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 18:54:24,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:24,710 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:24,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:24,711 INFO L85 PathProgramCache]: Analyzing trace with hash 606500216, now seen corresponding path program 2 times [2025-02-06 18:54:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:24,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511060667] [2025-02-06 18:54:24,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:24,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 18:54:24,731 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:54:24,731 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:24,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:25,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511060667] [2025-02-06 18:54:25,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511060667] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668656808] [2025-02-06 18:54:25,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:25,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:25,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:25,420 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 18:54:25,423 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 18:54:25,474 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 18:54:25,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:54:25,497 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:25,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:25,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-06 18:54:25,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:25,598 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 18:54:26,026 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-02-06 18:54:26,027 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 35 treesize of output 13 [2025-02-06 18:54:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:26,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:26,488 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 76 treesize of output 68 [2025-02-06 18:54:26,524 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-02-06 18:54:26,524 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 133 treesize of output 131 [2025-02-06 18:54:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668656808] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:27,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2025-02-06 18:54:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578080350] [2025-02-06 18:54:27,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:27,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 18:54:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:27,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 18:54:27,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 18:54:27,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-06 18:54:27,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 104 transitions, 1086 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 18:54:27,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:27,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-06 18:54:27,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:29,430 INFO L124 PetriNetUnfolderBase]: 1555/3258 cut-off events. [2025-02-06 18:54:29,431 INFO L125 PetriNetUnfolderBase]: For 35395/35547 co-relation queries the response was YES. [2025-02-06 18:54:29,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15952 conditions, 3258 events. 1555/3258 cut-off events. For 35395/35547 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 21238 event pairs, 762 based on Foata normal form. 31/3219 useless extension candidates. Maximal degree in co-relation 15893. Up to 2100 conditions per place. [2025-02-06 18:54:29,447 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 124 selfloop transitions, 28 changer transitions 12/183 dead transitions. [2025-02-06 18:54:29,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 183 transitions, 1906 flow [2025-02-06 18:54:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 18:54:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 18:54:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 366 transitions. [2025-02-06 18:54:29,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3616600790513834 [2025-02-06 18:54:29,448 INFO L175 Difference]: Start difference. First operand has 155 places, 104 transitions, 1086 flow. Second operand 23 states and 366 transitions. [2025-02-06 18:54:29,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 183 transitions, 1906 flow [2025-02-06 18:54:29,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 183 transitions, 1749 flow, removed 48 selfloop flow, removed 20 redundant places. [2025-02-06 18:54:29,509 INFO L231 Difference]: Finished difference. Result has 150 places, 107 transitions, 1089 flow [2025-02-06 18:54:29,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1089, PETRI_PLACES=150, PETRI_TRANSITIONS=107} [2025-02-06 18:54:29,510 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 107 predicate places. [2025-02-06 18:54:29,510 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 107 transitions, 1089 flow [2025-02-06 18:54:29,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 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 18:54:29,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:29,510 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:29,516 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 18:54:29,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:29,713 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:29,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 936997467, now seen corresponding path program 2 times [2025-02-06 18:54:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322349643] [2025-02-06 18:54:29,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:29,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 18:54:29,725 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:54:29,725 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:29,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322349643] [2025-02-06 18:54:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322349643] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770624079] [2025-02-06 18:54:29,875 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:29,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:29,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:29,878 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 18:54:29,883 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 18:54:29,934 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 18:54:29,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:54:29,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:29,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:29,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 18:54:29,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:30,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:30,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:30,268 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 50 treesize of output 52 [2025-02-06 18:54:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:30,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770624079] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:30,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:30,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 21 [2025-02-06 18:54:30,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656913831] [2025-02-06 18:54:30,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:30,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:54:30,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:30,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:54:30,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:54:30,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-06 18:54:30,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 107 transitions, 1089 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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 18:54:30,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:30,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-06 18:54:30,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:32,148 INFO L124 PetriNetUnfolderBase]: 2699/5755 cut-off events. [2025-02-06 18:54:32,148 INFO L125 PetriNetUnfolderBase]: For 81857/82173 co-relation queries the response was YES. [2025-02-06 18:54:32,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28500 conditions, 5755 events. 2699/5755 cut-off events. For 81857/82173 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 40899 event pairs, 64 based on Foata normal form. 538/6281 useless extension candidates. Maximal degree in co-relation 28444. Up to 815 conditions per place. [2025-02-06 18:54:32,190 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 315 selfloop transitions, 117 changer transitions 13/456 dead transitions. [2025-02-06 18:54:32,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 456 transitions, 5499 flow [2025-02-06 18:54:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-06 18:54:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-02-06 18:54:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 718 transitions. [2025-02-06 18:54:32,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4184149184149184 [2025-02-06 18:54:32,192 INFO L175 Difference]: Start difference. First operand has 150 places, 107 transitions, 1089 flow. Second operand 39 states and 718 transitions. [2025-02-06 18:54:32,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 456 transitions, 5499 flow [2025-02-06 18:54:32,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 456 transitions, 5295 flow, removed 79 selfloop flow, removed 16 redundant places. [2025-02-06 18:54:32,284 INFO L231 Difference]: Finished difference. Result has 191 places, 198 transitions, 3332 flow [2025-02-06 18:54:32,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3332, PETRI_PLACES=191, PETRI_TRANSITIONS=198} [2025-02-06 18:54:32,285 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2025-02-06 18:54:32,285 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 198 transitions, 3332 flow [2025-02-06 18:54:32,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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 18:54:32,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:32,285 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] [2025-02-06 18:54:32,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:32,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:32,486 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:32,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1521747488, now seen corresponding path program 3 times [2025-02-06 18:54:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787423707] [2025-02-06 18:54:32,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:54:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:32,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-06 18:54:32,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 32 statements. [2025-02-06 18:54:32,499 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:54:32,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:32,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:32,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787423707] [2025-02-06 18:54:32,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787423707] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:32,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268638213] [2025-02-06 18:54:32,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:54:32,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:32,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:32,661 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 18:54:32,663 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 18:54:32,714 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-06 18:54:32,733 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 32 statements. [2025-02-06 18:54:32,733 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:54:32,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:32,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 18:54:32,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:32,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:33,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:33,048 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 49 treesize of output 51 [2025-02-06 18:54:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:33,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268638213] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:33,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:33,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-02-06 18:54:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22468127] [2025-02-06 18:54:33,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:33,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:54:33,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:33,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:54:33,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:54:33,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-06 18:54:33,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 3332 flow. Second operand has 20 states, 20 states have (on average 15.0) internal successors, (300), 20 states have internal predecessors, (300), 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 18:54:33,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:33,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-06 18:54:33,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:34,478 INFO L124 PetriNetUnfolderBase]: 2726/6322 cut-off events. [2025-02-06 18:54:34,479 INFO L125 PetriNetUnfolderBase]: For 133105/133816 co-relation queries the response was YES. [2025-02-06 18:54:34,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37313 conditions, 6322 events. 2726/6322 cut-off events. For 133105/133816 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 50624 event pairs, 171 based on Foata normal form. 510/6785 useless extension candidates. Maximal degree in co-relation 37234. Up to 1960 conditions per place. [2025-02-06 18:54:34,523 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 246 selfloop transitions, 163 changer transitions 6/435 dead transitions. [2025-02-06 18:54:34,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 435 transitions, 7683 flow [2025-02-06 18:54:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:54:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:54:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 424 transitions. [2025-02-06 18:54:34,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2025-02-06 18:54:34,525 INFO L175 Difference]: Start difference. First operand has 191 places, 198 transitions, 3332 flow. Second operand 21 states and 424 transitions. [2025-02-06 18:54:34,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 435 transitions, 7683 flow [2025-02-06 18:54:34,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 435 transitions, 4601 flow, removed 1500 selfloop flow, removed 12 redundant places. [2025-02-06 18:54:34,861 INFO L231 Difference]: Finished difference. Result has 204 places, 284 transitions, 3639 flow [2025-02-06 18:54:34,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3639, PETRI_PLACES=204, PETRI_TRANSITIONS=284} [2025-02-06 18:54:34,862 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2025-02-06 18:54:34,862 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 284 transitions, 3639 flow [2025-02-06 18:54:34,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 15.0) internal successors, (300), 20 states have internal predecessors, (300), 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 18:54:34,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:34,862 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] [2025-02-06 18:54:34,869 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 18:54:35,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:35,063 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:35,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2000797070, now seen corresponding path program 4 times [2025-02-06 18:54:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556593989] [2025-02-06 18:54:35,064 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:54:35,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:35,069 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:54:35,078 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:54:35,078 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:54:35,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556593989] [2025-02-06 18:54:36,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556593989] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630336286] [2025-02-06 18:54:36,590 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:54:36,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:36,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:36,593 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 18:54:36,594 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 18:54:36,639 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:54:36,656 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:54:36,656 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:54:36,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:36,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 18:54:36,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:36,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:37,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:37,042 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 49 treesize of output 51 [2025-02-06 18:54:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630336286] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:37,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:37,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 6] total 31 [2025-02-06 18:54:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893917831] [2025-02-06 18:54:37,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:37,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 18:54:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:37,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 18:54:37,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 18:54:37,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-02-06 18:54:37,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 284 transitions, 3639 flow. Second operand has 33 states, 33 states have (on average 11.757575757575758) internal successors, (388), 33 states have internal predecessors, (388), 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 18:54:37,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:37,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-02-06 18:54:37,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:39,705 INFO L124 PetriNetUnfolderBase]: 3990/8917 cut-off events. [2025-02-06 18:54:39,705 INFO L125 PetriNetUnfolderBase]: For 129212/129696 co-relation queries the response was YES. [2025-02-06 18:54:39,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45537 conditions, 8917 events. 3990/8917 cut-off events. For 129212/129696 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 72603 event pairs, 251 based on Foata normal form. 368/9245 useless extension candidates. Maximal degree in co-relation 45455. Up to 2554 conditions per place. [2025-02-06 18:54:39,955 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 456 selfloop transitions, 147 changer transitions 12/630 dead transitions. [2025-02-06 18:54:39,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 630 transitions, 7224 flow [2025-02-06 18:54:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-06 18:54:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-02-06 18:54:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 606 transitions. [2025-02-06 18:54:39,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2025-02-06 18:54:39,957 INFO L175 Difference]: Start difference. First operand has 204 places, 284 transitions, 3639 flow. Second operand 36 states and 606 transitions. [2025-02-06 18:54:39,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 630 transitions, 7224 flow [2025-02-06 18:54:40,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 630 transitions, 6904 flow, removed 138 selfloop flow, removed 6 redundant places. [2025-02-06 18:54:40,581 INFO L231 Difference]: Finished difference. Result has 240 places, 322 transitions, 4399 flow [2025-02-06 18:54:40,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4399, PETRI_PLACES=240, PETRI_TRANSITIONS=322} [2025-02-06 18:54:40,582 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2025-02-06 18:54:40,582 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 322 transitions, 4399 flow [2025-02-06 18:54:40,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.757575757575758) internal successors, (388), 33 states have internal predecessors, (388), 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 18:54:40,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:40,582 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:40,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 18:54:40,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:40,783 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:40,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1299987303, now seen corresponding path program 1 times [2025-02-06 18:54:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053469852] [2025-02-06 18:54:40,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:40,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:54:40,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:54:40,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:40,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:40,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053469852] [2025-02-06 18:54:40,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053469852] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023384774] [2025-02-06 18:54:40,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:40,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:40,930 INFO L229 MonitoredProcess]: Starting monitored process 19 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 18:54:40,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 18:54:40,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:54:41,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:54:41,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:41,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:41,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:54:41,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:41,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023384774] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:41,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 6] total 17 [2025-02-06 18:54:41,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743862599] [2025-02-06 18:54:41,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:41,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:54:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:41,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:54:41,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:54:41,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2025-02-06 18:54:41,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 322 transitions, 4399 flow. Second operand has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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 18:54:41,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:41,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2025-02-06 18:54:41,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:42,619 INFO L124 PetriNetUnfolderBase]: 3010/7273 cut-off events. [2025-02-06 18:54:42,619 INFO L125 PetriNetUnfolderBase]: For 97209/97883 co-relation queries the response was YES. [2025-02-06 18:54:42,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38356 conditions, 7273 events. 3010/7273 cut-off events. For 97209/97883 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 61169 event pairs, 369 based on Foata normal form. 311/7473 useless extension candidates. Maximal degree in co-relation 38276. Up to 2335 conditions per place. [2025-02-06 18:54:42,702 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 212 selfloop transitions, 140 changer transitions 47/421 dead transitions. [2025-02-06 18:54:42,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 421 transitions, 6184 flow [2025-02-06 18:54:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:54:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:54:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 306 transitions. [2025-02-06 18:54:42,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2025-02-06 18:54:42,703 INFO L175 Difference]: Start difference. First operand has 240 places, 322 transitions, 4399 flow. Second operand 15 states and 306 transitions. [2025-02-06 18:54:42,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 421 transitions, 6184 flow [2025-02-06 18:54:43,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 421 transitions, 5850 flow, removed 128 selfloop flow, removed 19 redundant places. [2025-02-06 18:54:43,224 INFO L231 Difference]: Finished difference. Result has 231 places, 309 transitions, 4511 flow [2025-02-06 18:54:43,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4097, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4511, PETRI_PLACES=231, PETRI_TRANSITIONS=309} [2025-02-06 18:54:43,225 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2025-02-06 18:54:43,225 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 309 transitions, 4511 flow [2025-02-06 18:54:43,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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 18:54:43,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:43,226 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-02-06 18:54:43,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:43,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 18:54:43,427 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:43,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:43,427 INFO L85 PathProgramCache]: Analyzing trace with hash -143817706, now seen corresponding path program 2 times [2025-02-06 18:54:43,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:43,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828003604] [2025-02-06 18:54:43,427 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:43,434 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 18:54:43,436 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 18:54:43,436 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:43,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 18:54:43,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:43,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828003604] [2025-02-06 18:54:43,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828003604] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:43,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880699887] [2025-02-06 18:54:43,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:43,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:43,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:43,481 INFO L229 MonitoredProcess]: Starting monitored process 20 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 18:54:43,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 18:54:43,539 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 18:54:43,560 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 18:54:43,560 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:43,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:43,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:54:43,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 18:54:43,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 18:54:43,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880699887] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:43,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:43,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:54:43,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272081472] [2025-02-06 18:54:43,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:43,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:43,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:43,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:43,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:54:43,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-06 18:54:43,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 309 transitions, 4511 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 18:54:43,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:43,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-06 18:54:43,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:44,977 INFO L124 PetriNetUnfolderBase]: 4079/8460 cut-off events. [2025-02-06 18:54:44,977 INFO L125 PetriNetUnfolderBase]: For 112522/113308 co-relation queries the response was YES. [2025-02-06 18:54:45,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45946 conditions, 8460 events. 4079/8460 cut-off events. For 112522/113308 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 66611 event pairs, 1122 based on Foata normal form. 335/8718 useless extension candidates. Maximal degree in co-relation 45866. Up to 3609 conditions per place. [2025-02-06 18:54:45,063 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 463 selfloop transitions, 16 changer transitions 3/496 dead transitions. [2025-02-06 18:54:45,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 496 transitions, 8611 flow [2025-02-06 18:54:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2025-02-06 18:54:45,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2025-02-06 18:54:45,064 INFO L175 Difference]: Start difference. First operand has 231 places, 309 transitions, 4511 flow. Second operand 5 states and 97 transitions. [2025-02-06 18:54:45,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 496 transitions, 8611 flow [2025-02-06 18:54:45,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 496 transitions, 8367 flow, removed 64 selfloop flow, removed 15 redundant places. [2025-02-06 18:54:45,509 INFO L231 Difference]: Finished difference. Result has 205 places, 308 transitions, 4392 flow [2025-02-06 18:54:45,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4392, PETRI_PLACES=205, PETRI_TRANSITIONS=308} [2025-02-06 18:54:45,510 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2025-02-06 18:54:45,510 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 308 transitions, 4392 flow [2025-02-06 18:54:45,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 18:54:45,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:45,510 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:45,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:45,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:45,711 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:45,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash 852981255, now seen corresponding path program 3 times [2025-02-06 18:54:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012126904] [2025-02-06 18:54:45,712 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:54:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:45,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 4 equivalence classes. [2025-02-06 18:54:45,724 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 38 of 41 statements. [2025-02-06 18:54:45,724 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 18:54:45,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012126904] [2025-02-06 18:54:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012126904] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310054419] [2025-02-06 18:54:45,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:54:45,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:45,918 INFO L229 MonitoredProcess]: Starting monitored process 21 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 18:54:45,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 18:54:45,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 4 equivalence classes. [2025-02-06 18:54:46,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 38 of 41 statements. [2025-02-06 18:54:46,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 18:54:46,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:46,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 18:54:46,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:46,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:46,261 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-02-06 18:54:46,261 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 27 treesize of output 15 [2025-02-06 18:54:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:46,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310054419] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:46,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:46,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-02-06 18:54:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547654148] [2025-02-06 18:54:46,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:46,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 18:54:46,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:46,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 18:54:46,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2025-02-06 18:54:46,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-06 18:54:46,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 308 transitions, 4392 flow. Second operand has 25 states, 25 states have (on average 13.88) internal successors, (347), 25 states have internal predecessors, (347), 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 18:54:46,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:46,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-06 18:54:46,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:49,993 INFO L124 PetriNetUnfolderBase]: 9027/18537 cut-off events. [2025-02-06 18:54:49,993 INFO L125 PetriNetUnfolderBase]: For 327459/328001 co-relation queries the response was YES. [2025-02-06 18:54:50,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95450 conditions, 18537 events. 9027/18537 cut-off events. For 327459/328001 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 155505 event pairs, 277 based on Foata normal form. 564/19037 useless extension candidates. Maximal degree in co-relation 95376. Up to 2891 conditions per place. [2025-02-06 18:54:50,502 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 679 selfloop transitions, 473 changer transitions 20/1184 dead transitions. [2025-02-06 18:54:50,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1184 transitions, 17715 flow [2025-02-06 18:54:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-02-06 18:54:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2025-02-06 18:54:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1320 transitions. [2025-02-06 18:54:50,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-06 18:54:50,505 INFO L175 Difference]: Start difference. First operand has 205 places, 308 transitions, 4392 flow. Second operand 63 states and 1320 transitions. [2025-02-06 18:54:50,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1184 transitions, 17715 flow [2025-02-06 18:54:51,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1184 transitions, 17462 flow, removed 84 selfloop flow, removed 4 redundant places. [2025-02-06 18:54:51,444 INFO L231 Difference]: Finished difference. Result has 320 places, 636 transitions, 10044 flow [2025-02-06 18:54:51,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4362, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=10044, PETRI_PLACES=320, PETRI_TRANSITIONS=636} [2025-02-06 18:54:51,445 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2025-02-06 18:54:51,445 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 636 transitions, 10044 flow [2025-02-06 18:54:51,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.88) internal successors, (347), 25 states have internal predecessors, (347), 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 18:54:51,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:51,445 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:51,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 18:54:51,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-06 18:54:51,646 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-02-06 18:54:51,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1079326650, now seen corresponding path program 5 times [2025-02-06 18:54:51,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:51,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789251503] [2025-02-06 18:54:51,647 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:54:51,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:51,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 4 equivalence classes. [2025-02-06 18:54:51,669 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:54:51,669 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 18:54:51,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789251503] [2025-02-06 18:54:52,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789251503] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073179696] [2025-02-06 18:54:52,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:54:52,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:52,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:52,695 INFO L229 MonitoredProcess]: Starting monitored process 22 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 18:54:52,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 18:54:52,746 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 4 equivalence classes. [2025-02-06 18:54:52,770 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:54:52,770 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 18:54:52,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:52,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-06 18:54:52,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:53,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 18:54:53,600 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 18:54:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 18:54:53,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:53,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 16 [2025-02-06 18:54:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:53,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:54,321 INFO L349 Elim1Store]: treesize reduction 36, result has 65.0 percent of original size [2025-02-06 18:54:54,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 86 [2025-02-06 18:54:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073179696] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:54,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 49 [2025-02-06 18:54:54,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375897617] [2025-02-06 18:54:54,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:54,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-06 18:54:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:54,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-06 18:54:54,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=2174, Unknown=0, NotChecked=0, Total=2550 [2025-02-06 18:54:55,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-06 18:54:55,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 636 transitions, 10044 flow. Second operand has 51 states, 51 states have (on average 12.431372549019608) internal successors, (634), 51 states have internal predecessors, (634), 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 18:54:55,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:55,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-06 18:54:55,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:55:09,612 INFO L124 PetriNetUnfolderBase]: 19760/45258 cut-off events. [2025-02-06 18:55:09,612 INFO L125 PetriNetUnfolderBase]: For 1615479/1619033 co-relation queries the response was YES. [2025-02-06 18:55:10,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293380 conditions, 45258 events. 19760/45258 cut-off events. For 1615479/1619033 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 489296 event pairs, 933 based on Foata normal form. 4077/49156 useless extension candidates. Maximal degree in co-relation 293250. Up to 7992 conditions per place. [2025-02-06 18:55:10,532 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 1290 selfloop transitions, 1939 changer transitions 22/3285 dead transitions. [2025-02-06 18:55:10,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 3285 transitions, 53613 flow [2025-02-06 18:55:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-02-06 18:55:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2025-02-06 18:55:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1311 transitions. [2025-02-06 18:55:10,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2025-02-06 18:55:10,535 INFO L175 Difference]: Start difference. First operand has 320 places, 636 transitions, 10044 flow. Second operand 76 states and 1311 transitions. [2025-02-06 18:55:10,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 3285 transitions, 53613 flow