./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:47:16,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:47:17,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:47:17,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:47:17,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:47:17,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:47:17,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:47:17,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:47:17,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:47:17,094 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:47:17,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:47:17,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:47:17,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:47:17,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:47:17,095 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:47:17,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:47:17,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:47:17,096 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:47:17,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:47:17,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:47:17,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:47:17,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:47:17,097 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:47:17,098 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:47:17,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:47:17,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:47:17,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:47:17,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:17,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:47:17,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:47:17,098 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:47:17,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:47:17,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:47:17,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:47:17,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:47:17,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:47:17,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:47:17,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:47:17,099 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 -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2025-02-06 18:47:17,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:47:17,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:47:17,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:47:17,425 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:47:17,425 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:47:17,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2025-02-06 18:47:18,770 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3b6d27915/25309f90779548daa8cb2d717694709d/FLAG2edc93fe5 [2025-02-06 18:47:19,102 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:47:19,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2025-02-06 18:47:19,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3b6d27915/25309f90779548daa8cb2d717694709d/FLAG2edc93fe5 [2025-02-06 18:47:19,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3b6d27915/25309f90779548daa8cb2d717694709d [2025-02-06 18:47:19,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:47:19,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:47:19,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:19,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:47:19,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:47:19,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3993ea07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19, skipping insertion in model container [2025-02-06 18:47:19,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:47:19,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:19,361 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:47:19,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:19,400 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:47:19,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19 WrapperNode [2025-02-06 18:47:19,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:19,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:19,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:47:19,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:47:19,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,417 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,442 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 193 [2025-02-06 18:47:19,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:19,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:47:19,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:47:19,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:47:19,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,480 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-06 18:47:19,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,494 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:47:19,504 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:47:19,504 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:47:19,505 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:47:19,506 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (1/1) ... [2025-02-06 18:47:19,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:19,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:19,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:47:19,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:47:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:47:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:47:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:47:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:47:19,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:47:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:47:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:47:19,569 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:47:19,672 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:47:19,675 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:47:20,150 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:47:20,151 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:47:20,472 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:47:20,472 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:47:20,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:20 BoogieIcfgContainer [2025-02-06 18:47:20,473 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:47:20,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:47:20,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:47:20,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:47:20,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:47:19" (1/3) ... [2025-02-06 18:47:20,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc20b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:20, skipping insertion in model container [2025-02-06 18:47:20,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:19" (2/3) ... [2025-02-06 18:47:20,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc20b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:20, skipping insertion in model container [2025-02-06 18:47:20,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:20" (3/3) ... [2025-02-06 18:47:20,481 INFO L128 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2025-02-06 18:47:20,497 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:47:20,499 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array-eq-trans.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 6 loop locations, and 12 error locations. [2025-02-06 18:47:20,499 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:47:20,558 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:47:20,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2025-02-06 18:47:20,633 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2025-02-06 18:47:20,636 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:47:20,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2025-02-06 18:47:20,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2025-02-06 18:47:20,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 129 flow [2025-02-06 18:47:20,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:47:20,671 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;@8cd80f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:47:20,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-06 18:47:20,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:47:20,677 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:47:20,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:47:20,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:20,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:47:20,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:20,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 648626, now seen corresponding path program 1 times [2025-02-06 18:47:20,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760231718] [2025-02-06 18:47:20,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:20,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:47:20,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:47:20,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:20,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:20,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:20,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760231718] [2025-02-06 18:47:20,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760231718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:20,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:20,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:20,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43586321] [2025-02-06 18:47:20,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:20,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:21,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:21,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:21,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:21,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2025-02-06 18:47:21,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:21,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:21,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2025-02-06 18:47:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:21,493 INFO L124 PetriNetUnfolderBase]: 1540/2507 cut-off events. [2025-02-06 18:47:21,494 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-02-06 18:47:21,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4607 conditions, 2507 events. 1540/2507 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 14749 event pairs, 930 based on Foata normal form. 3/2056 useless extension candidates. Maximal degree in co-relation 4234. Up to 1960 conditions per place. [2025-02-06 18:47:21,521 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 38 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2025-02-06 18:47:21,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 243 flow [2025-02-06 18:47:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2025-02-06 18:47:21,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2025-02-06 18:47:21,536 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 4 states and 138 transitions. [2025-02-06 18:47:21,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 243 flow [2025-02-06 18:47:21,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:47:21,550 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 208 flow [2025-02-06 18:47:21,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2025-02-06 18:47:21,557 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2025-02-06 18:47:21,557 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 208 flow [2025-02-06 18:47:21,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:21,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:21,557 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:47:21,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:47:21,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:21,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2143898586, now seen corresponding path program 1 times [2025-02-06 18:47:21,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:21,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613993680] [2025-02-06 18:47:21,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:21,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:21,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:47:21,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:47:21,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:21,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:21,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613993680] [2025-02-06 18:47:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613993680] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391136862] [2025-02-06 18:47:21,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:21,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:21,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:21,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:47:21,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:47:21,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:47:21,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:21,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:21,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:21,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:21,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:47:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391136862] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:21,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:47:21,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:47:21,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143905899] [2025-02-06 18:47:21,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:21,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:47:21,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:21,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:47:21,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:47:21,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2025-02-06 18:47:21,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:21,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:21,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2025-02-06 18:47:21,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:22,245 INFO L124 PetriNetUnfolderBase]: 1540/2504 cut-off events. [2025-02-06 18:47:22,245 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-02-06 18:47:22,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 2504 events. 1540/2504 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 14698 event pairs, 930 based on Foata normal form. 3/2058 useless extension candidates. Maximal degree in co-relation 4511. Up to 1945 conditions per place. [2025-02-06 18:47:22,265 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 28 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2025-02-06 18:47:22,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 286 flow [2025-02-06 18:47:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:47:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:47:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2025-02-06 18:47:22,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2025-02-06 18:47:22,267 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 208 flow. Second operand 6 states and 174 transitions. [2025-02-06 18:47:22,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 286 flow [2025-02-06 18:47:22,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:22,270 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 230 flow [2025-02-06 18:47:22,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2025-02-06 18:47:22,271 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2025-02-06 18:47:22,271 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 230 flow [2025-02-06 18:47:22,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:22,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:22,272 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:47:22,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:47:22,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:22,476 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:22,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2036347278, now seen corresponding path program 1 times [2025-02-06 18:47:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:22,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45617532] [2025-02-06 18:47:22,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:22,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:22,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:22,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:22,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:22,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45617532] [2025-02-06 18:47:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45617532] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994287499] [2025-02-06 18:47:22,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:22,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:22,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:22,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:22,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:47:22,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:22,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:22,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:22,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:22,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:22,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:22,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994287499] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:22,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:22,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:47:22,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528340182] [2025-02-06 18:47:22,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:22,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:47:22,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:22,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:47:22,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:47:22,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2025-02-06 18:47:22,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:22,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:22,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2025-02-06 18:47:22,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:23,264 INFO L124 PetriNetUnfolderBase]: 1549/2540 cut-off events. [2025-02-06 18:47:23,265 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-02-06 18:47:23,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 2540 events. 1549/2540 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 14967 event pairs, 930 based on Foata normal form. 9/2100 useless extension candidates. Maximal degree in co-relation 4513. Up to 1960 conditions per place. [2025-02-06 18:47:23,282 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 35 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2025-02-06 18:47:23,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 548 flow [2025-02-06 18:47:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:47:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:47:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2025-02-06 18:47:23,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4693548387096774 [2025-02-06 18:47:23,285 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 230 flow. Second operand 10 states and 291 transitions. [2025-02-06 18:47:23,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 548 flow [2025-02-06 18:47:23,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 465 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-02-06 18:47:23,289 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 445 flow [2025-02-06 18:47:23,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2025-02-06 18:47:23,289 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2025-02-06 18:47:23,290 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 445 flow [2025-02-06 18:47:23,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:23,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:23,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:23,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:23,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:23,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:23,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1110786779, now seen corresponding path program 1 times [2025-02-06 18:47:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:23,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288117865] [2025-02-06 18:47:23,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:23,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:47:23,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:47:23,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:23,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288117865] [2025-02-06 18:47:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288117865] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:23,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:23,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715478259] [2025-02-06 18:47:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:23,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:23,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:23,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:23,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2025-02-06 18:47:23,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:23,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:23,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2025-02-06 18:47:23,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:24,037 INFO L124 PetriNetUnfolderBase]: 2890/4460 cut-off events. [2025-02-06 18:47:24,038 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-02-06 18:47:24,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8592 conditions, 4460 events. 2890/4460 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 26558 event pairs, 613 based on Foata normal form. 86/3846 useless extension candidates. Maximal degree in co-relation 8494. Up to 2214 conditions per place. [2025-02-06 18:47:24,093 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 105 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2025-02-06 18:47:24,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 127 transitions, 743 flow [2025-02-06 18:47:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2025-02-06 18:47:24,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7016129032258065 [2025-02-06 18:47:24,096 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 445 flow. Second operand 4 states and 174 transitions. [2025-02-06 18:47:24,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 127 transitions, 743 flow [2025-02-06 18:47:24,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 127 transitions, 706 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:24,101 INFO L231 Difference]: Finished difference. Result has 71 places, 92 transitions, 430 flow [2025-02-06 18:47:24,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=71, PETRI_TRANSITIONS=92} [2025-02-06 18:47:24,104 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2025-02-06 18:47:24,105 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 92 transitions, 430 flow [2025-02-06 18:47:24,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:24,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:24,107 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:24,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:47:24,107 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:24,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash 977099304, now seen corresponding path program 1 times [2025-02-06 18:47:24,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:24,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9810766] [2025-02-06 18:47:24,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:24,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:24,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:47:24,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:47:24,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:24,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:24,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:24,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9810766] [2025-02-06 18:47:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9810766] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:24,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002751533] [2025-02-06 18:47:24,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:24,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:24,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:24,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:24,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:24,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2025-02-06 18:47:24,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 92 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:24,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:24,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2025-02-06 18:47:24,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:24,585 INFO L124 PetriNetUnfolderBase]: 3053/4809 cut-off events. [2025-02-06 18:47:24,585 INFO L125 PetriNetUnfolderBase]: For 694/732 co-relation queries the response was YES. [2025-02-06 18:47:24,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9736 conditions, 4809 events. 3053/4809 cut-off events. For 694/732 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 29567 event pairs, 1338 based on Foata normal form. 152/4302 useless extension candidates. Maximal degree in co-relation 9640. Up to 2851 conditions per place. [2025-02-06 18:47:24,624 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 85 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2025-02-06 18:47:24,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 107 transitions, 650 flow [2025-02-06 18:47:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2025-02-06 18:47:24,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6008064516129032 [2025-02-06 18:47:24,628 INFO L175 Difference]: Start difference. First operand has 71 places, 92 transitions, 430 flow. Second operand 4 states and 149 transitions. [2025-02-06 18:47:24,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 107 transitions, 650 flow [2025-02-06 18:47:24,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 107 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:24,633 INFO L231 Difference]: Finished difference. Result has 72 places, 91 transitions, 432 flow [2025-02-06 18:47:24,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=72, PETRI_TRANSITIONS=91} [2025-02-06 18:47:24,634 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-02-06 18:47:24,634 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 91 transitions, 432 flow [2025-02-06 18:47:24,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:24,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:24,634 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:24,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:47:24,634 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:24,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 225307981, now seen corresponding path program 1 times [2025-02-06 18:47:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:24,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212964650] [2025-02-06 18:47:24,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:24,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:24,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:47:24,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:47:24,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:24,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:24,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:24,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212964650] [2025-02-06 18:47:24,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212964650] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:24,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:24,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:24,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242508306] [2025-02-06 18:47:24,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:24,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:24,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:24,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:24,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:24,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2025-02-06 18:47:24,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 91 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:24,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:24,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2025-02-06 18:47:24,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:25,277 INFO L124 PetriNetUnfolderBase]: 4375/6810 cut-off events. [2025-02-06 18:47:25,278 INFO L125 PetriNetUnfolderBase]: For 1420/1570 co-relation queries the response was YES. [2025-02-06 18:47:25,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14364 conditions, 6810 events. 4375/6810 cut-off events. For 1420/1570 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 42796 event pairs, 1017 based on Foata normal form. 152/6541 useless extension candidates. Maximal degree in co-relation 14268. Up to 3161 conditions per place. [2025-02-06 18:47:25,331 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 107 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2025-02-06 18:47:25,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 129 transitions, 759 flow [2025-02-06 18:47:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2025-02-06 18:47:25,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6814516129032258 [2025-02-06 18:47:25,333 INFO L175 Difference]: Start difference. First operand has 72 places, 91 transitions, 432 flow. Second operand 4 states and 169 transitions. [2025-02-06 18:47:25,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 129 transitions, 759 flow [2025-02-06 18:47:25,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 129 transitions, 749 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:25,340 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 446 flow [2025-02-06 18:47:25,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2025-02-06 18:47:25,341 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2025-02-06 18:47:25,341 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 446 flow [2025-02-06 18:47:25,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:25,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:25,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:47:25,342 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:25,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1680357029, now seen corresponding path program 1 times [2025-02-06 18:47:25,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:25,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429018332] [2025-02-06 18:47:25,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:25,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:25,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:47:25,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:47:25,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:25,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:25,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429018332] [2025-02-06 18:47:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429018332] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:25,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254153228] [2025-02-06 18:47:25,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:25,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:25,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:25,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:25,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2025-02-06 18:47:25,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:25,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2025-02-06 18:47:25,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:26,221 INFO L124 PetriNetUnfolderBase]: 7559/11511 cut-off events. [2025-02-06 18:47:26,222 INFO L125 PetriNetUnfolderBase]: For 3146/3536 co-relation queries the response was YES. [2025-02-06 18:47:26,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24976 conditions, 11511 events. 7559/11511 cut-off events. For 3146/3536 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 73748 event pairs, 1880 based on Foata normal form. 224/10952 useless extension candidates. Maximal degree in co-relation 24878. Up to 5561 conditions per place. [2025-02-06 18:47:26,314 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 111 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2025-02-06 18:47:26,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 132 transitions, 798 flow [2025-02-06 18:47:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2025-02-06 18:47:26,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2025-02-06 18:47:26,315 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 446 flow. Second operand 4 states and 168 transitions. [2025-02-06 18:47:26,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 132 transitions, 798 flow [2025-02-06 18:47:26,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 132 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:26,327 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 466 flow [2025-02-06 18:47:26,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2025-02-06 18:47:26,329 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2025-02-06 18:47:26,329 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 466 flow [2025-02-06 18:47:26,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:26,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:26,331 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:26,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:47:26,331 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:26,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:26,331 INFO L85 PathProgramCache]: Analyzing trace with hash 860961536, now seen corresponding path program 1 times [2025-02-06 18:47:26,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:26,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730319272] [2025-02-06 18:47:26,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:26,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:26,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:47:26,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:47:26,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:26,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:47:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:26,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730319272] [2025-02-06 18:47:26,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730319272] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:26,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:26,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129601213] [2025-02-06 18:47:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:26,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:26,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:26,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:26,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 62 [2025-02-06 18:47:26,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:26,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:26,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 62 [2025-02-06 18:47:26,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:27,429 INFO L124 PetriNetUnfolderBase]: 7653/12571 cut-off events. [2025-02-06 18:47:27,429 INFO L125 PetriNetUnfolderBase]: For 4400/4590 co-relation queries the response was YES. [2025-02-06 18:47:27,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28311 conditions, 12571 events. 7653/12571 cut-off events. For 4400/4590 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 90999 event pairs, 5344 based on Foata normal form. 193/12653 useless extension candidates. Maximal degree in co-relation 28154. Up to 8724 conditions per place. [2025-02-06 18:47:27,530 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 118 selfloop transitions, 10 changer transitions 0/148 dead transitions. [2025-02-06 18:47:27,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 148 transitions, 984 flow [2025-02-06 18:47:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 203 transitions. [2025-02-06 18:47:27,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6548387096774193 [2025-02-06 18:47:27,532 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 466 flow. Second operand 5 states and 203 transitions. [2025-02-06 18:47:27,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 148 transitions, 984 flow [2025-02-06 18:47:27,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 148 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:27,540 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 558 flow [2025-02-06 18:47:27,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2025-02-06 18:47:27,541 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2025-02-06 18:47:27,541 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 558 flow [2025-02-06 18:47:27,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:27,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:27,542 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:47:27,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:47:27,542 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:27,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:27,542 INFO L85 PathProgramCache]: Analyzing trace with hash 798291126, now seen corresponding path program 2 times [2025-02-06 18:47:27,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:27,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426988931] [2025-02-06 18:47:27,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:27,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:27,554 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:47:27,560 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:47:27,561 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:47:27,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:27,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426988931] [2025-02-06 18:47:27,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426988931] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224549074] [2025-02-06 18:47:27,608 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:27,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:27,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:27,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:47:27,670 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:47:27,679 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:47:27,679 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:47:27,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:27,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:47:27,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:27,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:27,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224549074] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:27,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:27,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:47:27,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098494545] [2025-02-06 18:47:27,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:27,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:27,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:27,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:27,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:27,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2025-02-06 18:47:27,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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 18:47:27,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:27,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2025-02-06 18:47:27,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:28,572 INFO L124 PetriNetUnfolderBase]: 7683/12888 cut-off events. [2025-02-06 18:47:28,573 INFO L125 PetriNetUnfolderBase]: For 4799/4829 co-relation queries the response was YES. [2025-02-06 18:47:28,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29017 conditions, 12888 events. 7683/12888 cut-off events. For 4799/4829 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 96630 event pairs, 5335 based on Foata normal form. 1/12709 useless extension candidates. Maximal degree in co-relation 28856. Up to 10455 conditions per place. [2025-02-06 18:47:28,648 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 68 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2025-02-06 18:47:28,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 716 flow [2025-02-06 18:47:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2025-02-06 18:47:28,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2025-02-06 18:47:28,650 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 558 flow. Second operand 4 states and 120 transitions. [2025-02-06 18:47:28,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 716 flow [2025-02-06 18:47:28,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 712 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:28,657 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 576 flow [2025-02-06 18:47:28,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2025-02-06 18:47:28,658 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2025-02-06 18:47:28,658 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 576 flow [2025-02-06 18:47:28,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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 18:47:28,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:28,660 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:28,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:28,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:28,860 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:28,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1287319768, now seen corresponding path program 1 times [2025-02-06 18:47:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563615483] [2025-02-06 18:47:28,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:28,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:47:28,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:47:28,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:28,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:29,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:29,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563615483] [2025-02-06 18:47:29,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563615483] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:29,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:29,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:47:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489283313] [2025-02-06 18:47:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:29,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:29,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:29,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:29,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 62 [2025-02-06 18:47:29,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:29,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:29,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 62 [2025-02-06 18:47:29,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:30,117 INFO L124 PetriNetUnfolderBase]: 9822/16302 cut-off events. [2025-02-06 18:47:30,118 INFO L125 PetriNetUnfolderBase]: For 5926/6234 co-relation queries the response was YES. [2025-02-06 18:47:30,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36668 conditions, 16302 events. 9822/16302 cut-off events. For 5926/6234 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 123922 event pairs, 4782 based on Foata normal form. 193/16332 useless extension candidates. Maximal degree in co-relation 36450. Up to 5925 conditions per place. [2025-02-06 18:47:30,215 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 136 selfloop transitions, 10 changer transitions 0/165 dead transitions. [2025-02-06 18:47:30,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 165 transitions, 1132 flow [2025-02-06 18:47:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2025-02-06 18:47:30,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6967741935483871 [2025-02-06 18:47:30,216 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 576 flow. Second operand 5 states and 216 transitions. [2025-02-06 18:47:30,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 165 transitions, 1132 flow [2025-02-06 18:47:30,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 165 transitions, 1100 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:30,228 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 567 flow [2025-02-06 18:47:30,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=567, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2025-02-06 18:47:30,229 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2025-02-06 18:47:30,229 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 567 flow [2025-02-06 18:47:30,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:30,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:30,230 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:30,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:47:30,230 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:30,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1607609902, now seen corresponding path program 1 times [2025-02-06 18:47:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316072163] [2025-02-06 18:47:30,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:30,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:30,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:47:30,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:47:30,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:30,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:30,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:30,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316072163] [2025-02-06 18:47:30,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316072163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:30,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:30,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:47:30,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101964324] [2025-02-06 18:47:30,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:30,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:30,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:30,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:30,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:30,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 62 [2025-02-06 18:47:30,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 567 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:30,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:30,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 62 [2025-02-06 18:47:30,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:31,343 INFO L124 PetriNetUnfolderBase]: 7725/12606 cut-off events. [2025-02-06 18:47:31,343 INFO L125 PetriNetUnfolderBase]: For 5809/6194 co-relation queries the response was YES. [2025-02-06 18:47:31,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29150 conditions, 12606 events. 7725/12606 cut-off events. For 5809/6194 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 89521 event pairs, 2895 based on Foata normal form. 92/12576 useless extension candidates. Maximal degree in co-relation 28935. Up to 5043 conditions per place. [2025-02-06 18:47:31,395 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 127 selfloop transitions, 10 changer transitions 1/157 dead transitions. [2025-02-06 18:47:31,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 157 transitions, 1084 flow [2025-02-06 18:47:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2025-02-06 18:47:31,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2025-02-06 18:47:31,397 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 567 flow. Second operand 5 states and 210 transitions. [2025-02-06 18:47:31,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 157 transitions, 1084 flow [2025-02-06 18:47:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 157 transitions, 1069 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:31,407 INFO L231 Difference]: Finished difference. Result has 89 places, 101 transitions, 577 flow [2025-02-06 18:47:31,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=89, PETRI_TRANSITIONS=101} [2025-02-06 18:47:31,408 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2025-02-06 18:47:31,408 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 101 transitions, 577 flow [2025-02-06 18:47:31,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:31,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:31,409 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-06 18:47:31,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:47:31,409 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:31,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1261675985, now seen corresponding path program 1 times [2025-02-06 18:47:31,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:31,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768740599] [2025-02-06 18:47:31,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:31,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:31,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:47:31,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:47:31,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:31,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:31,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:31,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768740599] [2025-02-06 18:47:31,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768740599] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:31,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039918812] [2025-02-06 18:47:31,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:31,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:31,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:31,589 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 18:47:31,592 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 18:47:31,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:47:31,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:47:31,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:31,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:31,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:47:31,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:31,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039918812] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:31,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:47:31,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585015301] [2025-02-06 18:47:31,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:31,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:47:31,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:31,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:47:31,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:47:31,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2025-02-06 18:47:31,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 101 transitions, 577 flow. Second operand has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:31,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:31,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2025-02-06 18:47:31,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:33,300 INFO L124 PetriNetUnfolderBase]: 8106/13771 cut-off events. [2025-02-06 18:47:33,300 INFO L125 PetriNetUnfolderBase]: For 7224/7258 co-relation queries the response was YES. [2025-02-06 18:47:33,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32434 conditions, 13771 events. 8106/13771 cut-off events. For 7224/7258 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 105153 event pairs, 5625 based on Foata normal form. 36/13529 useless extension candidates. Maximal degree in co-relation 31617. Up to 11057 conditions per place. [2025-02-06 18:47:33,431 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 40 selfloop transitions, 104 changer transitions 0/161 dead transitions. [2025-02-06 18:47:33,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 161 transitions, 1309 flow [2025-02-06 18:47:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 18:47:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 18:47:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 599 transitions. [2025-02-06 18:47:33,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43914956011730205 [2025-02-06 18:47:33,435 INFO L175 Difference]: Start difference. First operand has 89 places, 101 transitions, 577 flow. Second operand 22 states and 599 transitions. [2025-02-06 18:47:33,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 161 transitions, 1309 flow [2025-02-06 18:47:33,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 161 transitions, 1240 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:47:33,453 INFO L231 Difference]: Finished difference. Result has 112 places, 161 transitions, 1234 flow [2025-02-06 18:47:33,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1234, PETRI_PLACES=112, PETRI_TRANSITIONS=161} [2025-02-06 18:47:33,454 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2025-02-06 18:47:33,454 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 161 transitions, 1234 flow [2025-02-06 18:47:33,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:33,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:33,454 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:33,462 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 18:47:33,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 18:47:33,655 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:33,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash 325015936, now seen corresponding path program 1 times [2025-02-06 18:47:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:33,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940945564] [2025-02-06 18:47:33,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:33,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:47:33,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:47:33,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:33,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:47:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940945564] [2025-02-06 18:47:33,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940945564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:33,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:33,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89397203] [2025-02-06 18:47:33,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:33,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:33,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:33,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:33,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 62 [2025-02-06 18:47:33,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 161 transitions, 1234 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:33,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:33,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 62 [2025-02-06 18:47:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:34,541 INFO L124 PetriNetUnfolderBase]: 7004/11861 cut-off events. [2025-02-06 18:47:34,541 INFO L125 PetriNetUnfolderBase]: For 6268/6317 co-relation queries the response was YES. [2025-02-06 18:47:34,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28179 conditions, 11861 events. 7004/11861 cut-off events. For 6268/6317 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 87415 event pairs, 4839 based on Foata normal form. 49/11776 useless extension candidates. Maximal degree in co-relation 27882. Up to 9139 conditions per place. [2025-02-06 18:47:34,631 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 194 selfloop transitions, 16 changer transitions 2/231 dead transitions. [2025-02-06 18:47:34,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 231 transitions, 2185 flow [2025-02-06 18:47:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2025-02-06 18:47:34,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6419354838709678 [2025-02-06 18:47:34,633 INFO L175 Difference]: Start difference. First operand has 112 places, 161 transitions, 1234 flow. Second operand 5 states and 199 transitions. [2025-02-06 18:47:34,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 231 transitions, 2185 flow [2025-02-06 18:47:34,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 231 transitions, 1799 flow, removed 114 selfloop flow, removed 9 redundant places. [2025-02-06 18:47:34,651 INFO L231 Difference]: Finished difference. Result has 108 places, 161 transitions, 1023 flow [2025-02-06 18:47:34,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=108, PETRI_TRANSITIONS=161} [2025-02-06 18:47:34,652 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2025-02-06 18:47:34,652 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 161 transitions, 1023 flow [2025-02-06 18:47:34,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:34,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:34,653 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:34,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:47:34,653 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:34,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1328275205, now seen corresponding path program 1 times [2025-02-06 18:47:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002816177] [2025-02-06 18:47:34,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:34,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:47:34,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:47:34,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:34,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:47:34,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:34,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002816177] [2025-02-06 18:47:34,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002816177] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:34,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:34,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:47:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221663248] [2025-02-06 18:47:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:34,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:34,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:34,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:34,751 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 62 [2025-02-06 18:47:34,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 161 transitions, 1023 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:34,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:34,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 62 [2025-02-06 18:47:34,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:35,757 INFO L124 PetriNetUnfolderBase]: 7954/13404 cut-off events. [2025-02-06 18:47:35,758 INFO L125 PetriNetUnfolderBase]: For 6885/7251 co-relation queries the response was YES. [2025-02-06 18:47:35,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31945 conditions, 13404 events. 7954/13404 cut-off events. For 6885/7251 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 99677 event pairs, 3402 based on Foata normal form. 220/13453 useless extension candidates. Maximal degree in co-relation 31687. Up to 4822 conditions per place. [2025-02-06 18:47:35,840 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 160 selfloop transitions, 26 changer transitions 1/206 dead transitions. [2025-02-06 18:47:35,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 206 transitions, 1551 flow [2025-02-06 18:47:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2025-02-06 18:47:35,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6806451612903226 [2025-02-06 18:47:35,842 INFO L175 Difference]: Start difference. First operand has 108 places, 161 transitions, 1023 flow. Second operand 5 states and 211 transitions. [2025-02-06 18:47:35,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 206 transitions, 1551 flow [2025-02-06 18:47:35,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 206 transitions, 1519 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:47:35,858 INFO L231 Difference]: Finished difference. Result has 109 places, 160 transitions, 1037 flow [2025-02-06 18:47:35,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1037, PETRI_PLACES=109, PETRI_TRANSITIONS=160} [2025-02-06 18:47:35,859 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 51 predicate places. [2025-02-06 18:47:35,859 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 160 transitions, 1037 flow [2025-02-06 18:47:35,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:35,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:35,860 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:35,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:47:35,860 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:35,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash -935182513, now seen corresponding path program 1 times [2025-02-06 18:47:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:35,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527864366] [2025-02-06 18:47:35,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:35,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:35,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:47:35,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:47:35,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:35,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:47:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:35,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527864366] [2025-02-06 18:47:35,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527864366] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:35,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088637207] [2025-02-06 18:47:35,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:35,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:35,961 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 18:47:35,963 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 18:47:36,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:47:36,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:47:36,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:36,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:36,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:47:36,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:36,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088637207] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:36,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:36,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2025-02-06 18:47:36,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334263774] [2025-02-06 18:47:36,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:36,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:47:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:36,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:47:36,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:47:36,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2025-02-06 18:47:36,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 160 transitions, 1037 flow. Second operand has 18 states, 18 states have (on average 21.38888888888889) internal successors, (385), 18 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:36,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:36,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2025-02-06 18:47:36,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:38,964 INFO L124 PetriNetUnfolderBase]: 14303/23234 cut-off events. [2025-02-06 18:47:38,964 INFO L125 PetriNetUnfolderBase]: For 14363/14982 co-relation queries the response was YES. [2025-02-06 18:47:39,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56755 conditions, 23234 events. 14303/23234 cut-off events. For 14363/14982 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 181638 event pairs, 4712 based on Foata normal form. 536/23345 useless extension candidates. Maximal degree in co-relation 56382. Up to 4589 conditions per place. [2025-02-06 18:47:39,070 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 321 selfloop transitions, 91 changer transitions 2/429 dead transitions. [2025-02-06 18:47:39,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 429 transitions, 3288 flow [2025-02-06 18:47:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:47:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:47:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 517 transitions. [2025-02-06 18:47:39,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4905123339658444 [2025-02-06 18:47:39,072 INFO L175 Difference]: Start difference. First operand has 109 places, 160 transitions, 1037 flow. Second operand 17 states and 517 transitions. [2025-02-06 18:47:39,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 429 transitions, 3288 flow [2025-02-06 18:47:39,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 429 transitions, 3234 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:39,108 INFO L231 Difference]: Finished difference. Result has 126 places, 210 transitions, 1760 flow [2025-02-06 18:47:39,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1760, PETRI_PLACES=126, PETRI_TRANSITIONS=210} [2025-02-06 18:47:39,109 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2025-02-06 18:47:39,109 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 210 transitions, 1760 flow [2025-02-06 18:47:39,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.38888888888889) internal successors, (385), 18 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:39,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:39,110 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 18:47:39,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:39,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 18:47:39,310 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:39,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 259840424, now seen corresponding path program 1 times [2025-02-06 18:47:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296557747] [2025-02-06 18:47:39,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:39,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:39,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:39,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:39,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:39,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296557747] [2025-02-06 18:47:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296557747] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:39,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:39,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:47:39,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193804512] [2025-02-06 18:47:39,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:39,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:39,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:39,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:39,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:39,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 62 [2025-02-06 18:47:39,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 210 transitions, 1760 flow. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:39,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:39,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 62 [2025-02-06 18:47:39,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:40,671 INFO L124 PetriNetUnfolderBase]: 11758/19698 cut-off events. [2025-02-06 18:47:40,671 INFO L125 PetriNetUnfolderBase]: For 17623/17873 co-relation queries the response was YES. [2025-02-06 18:47:40,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50158 conditions, 19698 events. 11758/19698 cut-off events. For 17623/17873 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 154236 event pairs, 4870 based on Foata normal form. 78/19550 useless extension candidates. Maximal degree in co-relation 49733. Up to 8754 conditions per place. [2025-02-06 18:47:40,775 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 201 selfloop transitions, 27 changer transitions 5/251 dead transitions. [2025-02-06 18:47:40,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 251 transitions, 2404 flow [2025-02-06 18:47:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2025-02-06 18:47:40,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2025-02-06 18:47:40,776 INFO L175 Difference]: Start difference. First operand has 126 places, 210 transitions, 1760 flow. Second operand 5 states and 205 transitions. [2025-02-06 18:47:40,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 251 transitions, 2404 flow [2025-02-06 18:47:40,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 251 transitions, 2339 flow, removed 5 selfloop flow, removed 7 redundant places. [2025-02-06 18:47:40,809 INFO L231 Difference]: Finished difference. Result has 124 places, 210 transitions, 1772 flow [2025-02-06 18:47:40,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1772, PETRI_PLACES=124, PETRI_TRANSITIONS=210} [2025-02-06 18:47:40,810 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 66 predicate places. [2025-02-06 18:47:40,810 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 210 transitions, 1772 flow [2025-02-06 18:47:40,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:40,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:40,810 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:40,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 18:47:40,811 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:40,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash 64796157, now seen corresponding path program 1 times [2025-02-06 18:47:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:40,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675128731] [2025-02-06 18:47:40,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:40,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:40,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:47:40,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:47:40,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:40,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:40,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675128731] [2025-02-06 18:47:40,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675128731] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962767726] [2025-02-06 18:47:40,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:40,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:40,950 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 18:47:40,951 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 18:47:41,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:47:41,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:47:41,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:41,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:41,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:47:41,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:41,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:41,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962767726] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:41,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-02-06 18:47:41,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109884245] [2025-02-06 18:47:41,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:41,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 18:47:41,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:41,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 18:47:41,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-02-06 18:47:41,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2025-02-06 18:47:41,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 210 transitions, 1772 flow. Second operand has 21 states, 21 states have (on average 21.0) internal successors, (441), 21 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:41,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:41,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2025-02-06 18:47:41,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:46,532 INFO L124 PetriNetUnfolderBase]: 36134/59043 cut-off events. [2025-02-06 18:47:46,533 INFO L125 PetriNetUnfolderBase]: For 53126/54210 co-relation queries the response was YES. [2025-02-06 18:47:46,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149590 conditions, 59043 events. 36134/59043 cut-off events. For 53126/54210 co-relation queries the response was YES. Maximal size of possible extension queue 2436. Compared 525147 event pairs, 14027 based on Foata normal form. 1284/59507 useless extension candidates. Maximal degree in co-relation 149033. Up to 8891 conditions per place. [2025-02-06 18:47:47,212 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 357 selfloop transitions, 251 changer transitions 27/650 dead transitions. [2025-02-06 18:47:47,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 650 transitions, 5429 flow [2025-02-06 18:47:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 18:47:47,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 18:47:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 967 transitions. [2025-02-06 18:47:47,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45872865275142316 [2025-02-06 18:47:47,216 INFO L175 Difference]: Start difference. First operand has 124 places, 210 transitions, 1772 flow. Second operand 34 states and 967 transitions. [2025-02-06 18:47:47,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 650 transitions, 5429 flow [2025-02-06 18:47:47,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 650 transitions, 5338 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:47,319 INFO L231 Difference]: Finished difference. Result has 158 places, 310 transitions, 3205 flow [2025-02-06 18:47:47,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3205, PETRI_PLACES=158, PETRI_TRANSITIONS=310} [2025-02-06 18:47:47,320 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 100 predicate places. [2025-02-06 18:47:47,320 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 310 transitions, 3205 flow [2025-02-06 18:47:47,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 21.0) internal successors, (441), 21 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:47,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:47,320 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:47,326 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 18:47:47,521 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,SelfDestructingSolverStorable16 [2025-02-06 18:47:47,521 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:47,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:47,521 INFO L85 PathProgramCache]: Analyzing trace with hash 755653588, now seen corresponding path program 1 times [2025-02-06 18:47:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:47,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316423527] [2025-02-06 18:47:47,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:47,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:47,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:47:47,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:47:47,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:47,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 18:47:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316423527] [2025-02-06 18:47:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316423527] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470661915] [2025-02-06 18:47:47,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:47,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:47,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:47,625 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 18:47:47,628 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 18:47:47,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:47:47,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:47:47,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:47,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:47,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:47:47,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:47:47,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:47:47,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470661915] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:47,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:47,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2025-02-06 18:47:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864411655] [2025-02-06 18:47:47,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:47,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:47:47,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:47,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:47:47,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:47:48,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2025-02-06 18:47:48,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 310 transitions, 3205 flow. Second operand has 19 states, 19 states have (on average 21.105263157894736) internal successors, (401), 19 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:48,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:48,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2025-02-06 18:47:48,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:53,505 INFO L124 PetriNetUnfolderBase]: 37859/61135 cut-off events. [2025-02-06 18:47:53,505 INFO L125 PetriNetUnfolderBase]: For 89176/90626 co-relation queries the response was YES. [2025-02-06 18:47:53,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164307 conditions, 61135 events. 37859/61135 cut-off events. For 89176/90626 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 532371 event pairs, 11655 based on Foata normal form. 718/61487 useless extension candidates. Maximal degree in co-relation 163693. Up to 11915 conditions per place. [2025-02-06 18:47:53,988 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 340 selfloop transitions, 149 changer transitions 7/511 dead transitions. [2025-02-06 18:47:53,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 511 transitions, 5113 flow [2025-02-06 18:47:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:47:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:47:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 525 transitions. [2025-02-06 18:47:53,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4981024667931689 [2025-02-06 18:47:53,990 INFO L175 Difference]: Start difference. First operand has 158 places, 310 transitions, 3205 flow. Second operand 17 states and 525 transitions. [2025-02-06 18:47:53,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 511 transitions, 5113 flow [2025-02-06 18:47:54,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 511 transitions, 4988 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:47:54,093 INFO L231 Difference]: Finished difference. Result has 172 places, 317 transitions, 3568 flow [2025-02-06 18:47:54,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3568, PETRI_PLACES=172, PETRI_TRANSITIONS=317} [2025-02-06 18:47:54,094 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 114 predicate places. [2025-02-06 18:47:54,094 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 317 transitions, 3568 flow [2025-02-06 18:47:54,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.105263157894736) internal successors, (401), 19 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:54,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:54,095 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:54,100 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 18:47:54,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:54,295 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:47:54,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1768494820, now seen corresponding path program 1 times [2025-02-06 18:47:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:54,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195035183] [2025-02-06 18:47:54,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:54,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:54,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:47:54,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:47:54,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:54,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:47:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195035183] [2025-02-06 18:47:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195035183] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476987998] [2025-02-06 18:47:54,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:54,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:54,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:54,389 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 18:47:54,392 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 18:47:54,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:47:54,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:47:54,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:54,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:54,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:47:54,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:54,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476987998] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:54,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:54,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2025-02-06 18:47:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919211680] [2025-02-06 18:47:54,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:54,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:47:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:54,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:47:54,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:47:54,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2025-02-06 18:47:54,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 317 transitions, 3568 flow. Second operand has 18 states, 18 states have (on average 22.055555555555557) internal successors, (397), 18 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:54,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:54,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2025-02-06 18:47:54,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:00,098 INFO L124 PetriNetUnfolderBase]: 34477/55179 cut-off events. [2025-02-06 18:48:00,098 INFO L125 PetriNetUnfolderBase]: For 106698/107417 co-relation queries the response was YES. [2025-02-06 18:48:00,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156227 conditions, 55179 events. 34477/55179 cut-off events. For 106698/107417 co-relation queries the response was YES. Maximal size of possible extension queue 1994. Compared 467438 event pairs, 12220 based on Foata normal form. 1361/55189 useless extension candidates. Maximal degree in co-relation 155573. Up to 13825 conditions per place. [2025-02-06 18:48:00,580 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 415 selfloop transitions, 140 changer transitions 40/609 dead transitions. [2025-02-06 18:48:00,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 609 transitions, 7031 flow [2025-02-06 18:48:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:48:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:48:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 502 transitions. [2025-02-06 18:48:00,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.476280834914611 [2025-02-06 18:48:00,581 INFO L175 Difference]: Start difference. First operand has 172 places, 317 transitions, 3568 flow. Second operand 17 states and 502 transitions. [2025-02-06 18:48:00,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 609 transitions, 7031 flow [2025-02-06 18:48:00,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 609 transitions, 6960 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-02-06 18:48:00,875 INFO L231 Difference]: Finished difference. Result has 180 places, 316 transitions, 3787 flow [2025-02-06 18:48:00,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3787, PETRI_PLACES=180, PETRI_TRANSITIONS=316} [2025-02-06 18:48:00,875 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 122 predicate places. [2025-02-06 18:48:00,875 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 316 transitions, 3787 flow [2025-02-06 18:48:00,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.055555555555557) internal successors, (397), 18 states have internal predecessors, (397), 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 18:48:00,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:00,876 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:00,881 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 18:48:01,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:01,076 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:48:01,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:01,077 INFO L85 PathProgramCache]: Analyzing trace with hash 781929203, now seen corresponding path program 1 times [2025-02-06 18:48:01,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235561321] [2025-02-06 18:48:01,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:01,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:01,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 18:48:01,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 18:48:01,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:01,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 18:48:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235561321] [2025-02-06 18:48:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235561321] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594310315] [2025-02-06 18:48:01,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:01,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:01,190 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 18:48:01,194 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 18:48:01,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 18:48:01,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 18:48:01,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:01,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:01,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:48:01,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:48:01,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:48:01,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594310315] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:01,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:01,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2025-02-06 18:48:01,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425780219] [2025-02-06 18:48:01,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:01,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:48:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:01,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:48:01,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:48:01,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2025-02-06 18:48:01,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 316 transitions, 3787 flow. Second operand has 19 states, 19 states have (on average 21.68421052631579) internal successors, (412), 19 states have internal predecessors, (412), 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 18:48:01,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:01,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2025-02-06 18:48:01,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:07,038 INFO L124 PetriNetUnfolderBase]: 34383/54945 cut-off events. [2025-02-06 18:48:07,038 INFO L125 PetriNetUnfolderBase]: For 120803/121868 co-relation queries the response was YES. [2025-02-06 18:48:07,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161087 conditions, 54945 events. 34383/54945 cut-off events. For 120803/121868 co-relation queries the response was YES. Maximal size of possible extension queue 1696. Compared 454904 event pairs, 11140 based on Foata normal form. 827/55257 useless extension candidates. Maximal degree in co-relation 160412. Up to 11951 conditions per place. [2025-02-06 18:48:07,524 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 231 selfloop transitions, 236 changer transitions 38/519 dead transitions. [2025-02-06 18:48:07,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 519 transitions, 5974 flow [2025-02-06 18:48:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:48:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:48:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 437 transitions. [2025-02-06 18:48:07,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5034562211981567 [2025-02-06 18:48:07,525 INFO L175 Difference]: Start difference. First operand has 180 places, 316 transitions, 3787 flow. Second operand 14 states and 437 transitions. [2025-02-06 18:48:07,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 519 transitions, 5974 flow [2025-02-06 18:48:07,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 519 transitions, 5792 flow, removed 2 selfloop flow, removed 12 redundant places. [2025-02-06 18:48:07,758 INFO L231 Difference]: Finished difference. Result has 184 places, 316 transitions, 4086 flow [2025-02-06 18:48:07,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3615, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4086, PETRI_PLACES=184, PETRI_TRANSITIONS=316} [2025-02-06 18:48:07,758 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 126 predicate places. [2025-02-06 18:48:07,758 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 316 transitions, 4086 flow [2025-02-06 18:48:07,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.68421052631579) internal successors, (412), 19 states have internal predecessors, (412), 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 18:48:07,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:07,759 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:07,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:07,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:07,959 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:48:07,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash -883517262, now seen corresponding path program 2 times [2025-02-06 18:48:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:07,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44777730] [2025-02-06 18:48:07,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:07,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:48:07,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 28 statements. [2025-02-06 18:48:07,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:48:07,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 18:48:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44777730] [2025-02-06 18:48:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44777730] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587860689] [2025-02-06 18:48:08,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:08,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:08,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:08,021 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 18:48:08,023 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 18:48:08,094 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:48:08,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 28 statements. [2025-02-06 18:48:08,113 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:48:08,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:08,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:48:08,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 18:48:08,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 18:48:08,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587860689] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:08,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:08,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:48:08,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480293301] [2025-02-06 18:48:08,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:08,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:48:08,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:08,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:48:08,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:48:08,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2025-02-06 18:48:08,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 316 transitions, 4086 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 18:48:08,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:08,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2025-02-06 18:48:08,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:12,958 INFO L124 PetriNetUnfolderBase]: 31617/51122 cut-off events. [2025-02-06 18:48:12,959 INFO L125 PetriNetUnfolderBase]: For 123634/124255 co-relation queries the response was YES. [2025-02-06 18:48:13,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153678 conditions, 51122 events. 31617/51122 cut-off events. For 123634/124255 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 425164 event pairs, 14170 based on Foata normal form. 0/50558 useless extension candidates. Maximal degree in co-relation 152969. Up to 26481 conditions per place. [2025-02-06 18:48:13,472 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 340 selfloop transitions, 10 changer transitions 12/378 dead transitions. [2025-02-06 18:48:13,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 378 transitions, 5211 flow [2025-02-06 18:48:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:48:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:48:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2025-02-06 18:48:13,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2025-02-06 18:48:13,473 INFO L175 Difference]: Start difference. First operand has 184 places, 316 transitions, 4086 flow. Second operand 5 states and 190 transitions. [2025-02-06 18:48:13,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 378 transitions, 5211 flow [2025-02-06 18:48:13,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 378 transitions, 4952 flow, removed 5 selfloop flow, removed 6 redundant places. [2025-02-06 18:48:13,809 INFO L231 Difference]: Finished difference. Result has 178 places, 312 transitions, 3835 flow [2025-02-06 18:48:13,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3831, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3835, PETRI_PLACES=178, PETRI_TRANSITIONS=312} [2025-02-06 18:48:13,810 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 120 predicate places. [2025-02-06 18:48:13,810 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 312 transitions, 3835 flow [2025-02-06 18:48:13,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 18:48:13,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:13,811 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:14,064 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2025-02-06 18:48:14,065 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 18:48:14,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:14,065 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:48:14,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1218377424, now seen corresponding path program 2 times [2025-02-06 18:48:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:14,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129650700] [2025-02-06 18:48:14,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:14,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:14,068 WARN L724 oredProcess$PipePump]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] The stream was forcibly closed: stdIn [2025-02-06 18:48:14,074 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:48:14,078 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 30 statements. [2025-02-06 18:48:14,078 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:48:14,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:48:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129650700] [2025-02-06 18:48:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129650700] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117369592] [2025-02-06 18:48:14,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:14,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:14,111 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 18:48:14,115 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 18:48:14,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:48:14,210 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 30 statements. [2025-02-06 18:48:14,210 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:48:14,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:14,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:48:14,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:48:14,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 18:48:14,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117369592] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:14,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:14,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-02-06 18:48:14,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399511766] [2025-02-06 18:48:14,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:14,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:48:14,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:14,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:48:14,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:48:14,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2025-02-06 18:48:14,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 312 transitions, 3835 flow. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 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 18:48:14,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:14,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2025-02-06 18:48:14,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand