./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:55:01,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:55:01,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:55:01,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:55:01,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:55:01,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:55:01,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:55:01,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:55:01,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:55:01,147 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:55:01,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:55:01,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:55:01,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:55:01,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:55:01,147 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:55:01,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:55:01,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:55:01,148 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:55:01,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:55:01,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:55:01,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:55:01,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:55:01,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:55:01,149 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:55:01,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:55:01,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:55:01,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:55:01,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:01,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:55:01,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:55:01,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:55:01,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:55:01,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:01,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:55:01,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:55:01,151 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 -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2025-01-10 06:55:01,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:55:01,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:55:01,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:55:01,455 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:55:01,455 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:55:01,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2025-01-10 06:55:02,814 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/28d896bb8/fd2919234ecc4188a1e4582b53243e9b/FLAG90f4a45ea [2025-01-10 06:55:03,070 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:55:03,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2025-01-10 06:55:03,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/28d896bb8/fd2919234ecc4188a1e4582b53243e9b/FLAG90f4a45ea [2025-01-10 06:55:03,095 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/28d896bb8/fd2919234ecc4188a1e4582b53243e9b [2025-01-10 06:55:03,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:55:03,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:55:03,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:55:03,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:55:03,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:55:03,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0fcd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03, skipping insertion in model container [2025-01-10 06:55:03,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:55:03,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:55:03,290 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:55:03,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:55:03,335 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:55:03,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03 WrapperNode [2025-01-10 06:55:03,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:55:03,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:55:03,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:55:03,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:55:03,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,384 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 164 [2025-01-10 06:55:03,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:55:03,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:55:03,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:55:03,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:55:03,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,397 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,432 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-10 06:55:03,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,442 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:55:03,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:55:03,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:55:03,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:55:03,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (1/1) ... [2025-01-10 06:55:03,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:03,497 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) [2025-01-10 06:55:03,500 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 [2025-01-10 06:55:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:55:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:55:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:55:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:55:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:55:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:55:03,523 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:55:03,624 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:55:03,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:55:03,995 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:55:03,995 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:55:04,268 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:55:04,268 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-10 06:55:04,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:04 BoogieIcfgContainer [2025-01-10 06:55:04,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:55:04,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:55:04,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:55:04,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:55:04,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:55:03" (1/3) ... [2025-01-10 06:55:04,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e1ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:04, skipping insertion in model container [2025-01-10 06:55:04,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:03" (2/3) ... [2025-01-10 06:55:04,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e1ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:04, skipping insertion in model container [2025-01-10 06:55:04,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:04" (3/3) ... [2025-01-10 06:55:04,281 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2025-01-10 06:55:04,296 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:55:04,298 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-2-nl.wvr.c that has 3 procedures, 40 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-01-10 06:55:04,298 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:55:04,366 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:55:04,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 100 flow [2025-01-10 06:55:04,463 INFO L124 PetriNetUnfolderBase]: 4/41 cut-off events. [2025-01-10 06:55:04,466 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:55:04,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 4/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2025-01-10 06:55:04,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 43 transitions, 100 flow [2025-01-10 06:55:04,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 39 transitions, 87 flow [2025-01-10 06:55:04,480 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:55:04,491 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;@1cfb5611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:55:04,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2025-01-10 06:55:04,496 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:55:04,496 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:55:04,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:55:04,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:04,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:55:04,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:04,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 516669, now seen corresponding path program 1 times [2025-01-10 06:55:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:04,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445922085] [2025-01-10 06:55:04,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:04,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:55:04,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:55:04,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:04,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:04,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:04,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445922085] [2025-01-10 06:55:04,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445922085] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:04,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:04,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:55:04,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746479471] [2025-01-10 06:55:04,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:04,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:04,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:04,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:04,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:04,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-01-10 06:55:04,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:04,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:04,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:05,007 INFO L124 PetriNetUnfolderBase]: 184/425 cut-off events. [2025-01-10 06:55:05,008 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-01-10 06:55:05,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 425 events. 184/425 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2194 event pairs, 154 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 708. Up to 308 conditions per place. [2025-01-10 06:55:05,019 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 24 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2025-01-10 06:55:05,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 141 flow [2025-01-10 06:55:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-01-10 06:55:05,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2025-01-10 06:55:05,036 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 87 flow. Second operand 4 states and 82 transitions. [2025-01-10 06:55:05,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 141 flow [2025-01-10 06:55:05,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:05,043 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 103 flow [2025-01-10 06:55:05,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2025-01-10 06:55:05,049 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2025-01-10 06:55:05,049 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 103 flow [2025-01-10 06:55:05,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-01-10 06:55:05,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:05,049 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:55:05,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:55:05,050 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:05,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:05,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1787264414, now seen corresponding path program 1 times [2025-01-10 06:55:05,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:05,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677659316] [2025-01-10 06:55:05,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:05,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:05,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:55:05,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:55:05,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:05,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:05,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677659316] [2025-01-10 06:55:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677659316] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631033100] [2025-01-10 06:55:05,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:05,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:05,241 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) [2025-01-10 06:55:05,242 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 [2025-01-10 06:55:05,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:55:05,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:55:05,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:05,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:05,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:05,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:05,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:55:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631033100] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:55:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:55:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451121856] [2025-01-10 06:55:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:05,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:05,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:05,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:55:05,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:05,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:05,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:05,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:05,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:05,604 INFO L124 PetriNetUnfolderBase]: 184/424 cut-off events. [2025-01-10 06:55:05,604 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:55:05,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 424 events. 184/424 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2196 event pairs, 154 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 740. Up to 303 conditions per place. [2025-01-10 06:55:05,608 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 20 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2025-01-10 06:55:05,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 153 flow [2025-01-10 06:55:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:55:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:55:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2025-01-10 06:55:05,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3875968992248062 [2025-01-10 06:55:05,613 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 103 flow. Second operand 6 states and 100 transitions. [2025-01-10 06:55:05,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 153 flow [2025-01-10 06:55:05,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:05,614 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 110 flow [2025-01-10 06:55:05,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=110, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2025-01-10 06:55:05,616 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2025-01-10 06:55:05,616 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 110 flow [2025-01-10 06:55:05,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:05,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:05,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:55:05,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 06:55:05,817 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 [2025-01-10 06:55:05,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:05,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1785265647, now seen corresponding path program 1 times [2025-01-10 06:55:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697583122] [2025-01-10 06:55:05,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:05,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:05,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:55:05,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:55:05,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:05,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697583122] [2025-01-10 06:55:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697583122] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:55:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963215720] [2025-01-10 06:55:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:05,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:05,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:05,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:05,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2025-01-10 06:55:05,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:05,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:05,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2025-01-10 06:55:05,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:06,082 INFO L124 PetriNetUnfolderBase]: 198/443 cut-off events. [2025-01-10 06:55:06,083 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 06:55:06,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 443 events. 198/443 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2132 event pairs, 167 based on Foata normal form. 17/366 useless extension candidates. Maximal degree in co-relation 728. Up to 305 conditions per place. [2025-01-10 06:55:06,086 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 23 selfloop transitions, 2 changer transitions 8/44 dead transitions. [2025-01-10 06:55:06,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 193 flow [2025-01-10 06:55:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-01-10 06:55:06,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5523255813953488 [2025-01-10 06:55:06,088 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 110 flow. Second operand 4 states and 95 transitions. [2025-01-10 06:55:06,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 193 flow [2025-01-10 06:55:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 171 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-01-10 06:55:06,090 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2025-01-10 06:55:06,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2025-01-10 06:55:06,091 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2025-01-10 06:55:06,091 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2025-01-10 06:55:06,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:06,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:06,091 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:55:06,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:55:06,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:06,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash 429378537, now seen corresponding path program 1 times [2025-01-10 06:55:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983490450] [2025-01-10 06:55:06,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:06,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:55:06,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:55:06,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:06,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:06,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983490450] [2025-01-10 06:55:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983490450] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840135386] [2025-01-10 06:55:06,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:06,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:06,160 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) [2025-01-10 06:55:06,161 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 [2025-01-10 06:55:06,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:55:06,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:55:06,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:06,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:06,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:06,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:06,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:06,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840135386] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:06,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:06,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:55:06,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276564894] [2025-01-10 06:55:06,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:06,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:55:06,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:06,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:55:06,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:55:06,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:06,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 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) [2025-01-10 06:55:06,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:06,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:06,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:06,503 INFO L124 PetriNetUnfolderBase]: 186/435 cut-off events. [2025-01-10 06:55:06,504 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2025-01-10 06:55:06,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 435 events. 186/435 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2263 event pairs, 154 based on Foata normal form. 3/336 useless extension candidates. Maximal degree in co-relation 866. Up to 309 conditions per place. [2025-01-10 06:55:06,507 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 23 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2025-01-10 06:55:06,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 202 flow [2025-01-10 06:55:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:55:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:55:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2025-01-10 06:55:06,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3674418604651163 [2025-01-10 06:55:06,512 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 10 states and 158 transitions. [2025-01-10 06:55:06,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 202 flow [2025-01-10 06:55:06,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:06,515 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 170 flow [2025-01-10 06:55:06,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=170, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2025-01-10 06:55:06,517 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2025-01-10 06:55:06,517 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 170 flow [2025-01-10 06:55:06,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 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) [2025-01-10 06:55:06,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:06,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:06,528 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 [2025-01-10 06:55:06,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:06,718 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:06,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash 317928396, now seen corresponding path program 1 times [2025-01-10 06:55:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:06,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459803545] [2025-01-10 06:55:06,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:06,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:06,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:55:06,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:55:06,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:06,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:06,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459803545] [2025-01-10 06:55:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459803545] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211515826] [2025-01-10 06:55:06,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:06,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:06,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:06,897 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) [2025-01-10 06:55:06,898 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 [2025-01-10 06:55:06,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:55:06,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:55:06,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:06,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:06,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:06,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:06,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:55:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211515826] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:06,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:55:06,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-01-10 06:55:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433063382] [2025-01-10 06:55:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:06,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:55:06,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:06,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:55:06,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:55:06,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2025-01-10 06:55:06,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-01-10 06:55:06,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:06,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2025-01-10 06:55:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:07,045 INFO L124 PetriNetUnfolderBase]: 124/308 cut-off events. [2025-01-10 06:55:07,046 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-01-10 06:55:07,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 308 events. 124/308 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1446 event pairs, 98 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 581. Up to 214 conditions per place. [2025-01-10 06:55:07,048 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 30 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2025-01-10 06:55:07,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 220 flow [2025-01-10 06:55:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:55:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:55:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2025-01-10 06:55:07,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2025-01-10 06:55:07,049 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 170 flow. Second operand 3 states and 65 transitions. [2025-01-10 06:55:07,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 220 flow [2025-01-10 06:55:07,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 210 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:07,051 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 150 flow [2025-01-10 06:55:07,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2025-01-10 06:55:07,052 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2025-01-10 06:55:07,052 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 150 flow [2025-01-10 06:55:07,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-01-10 06:55:07,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:07,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:07,061 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 [2025-01-10 06:55:07,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:07,256 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:07,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:07,257 INFO L85 PathProgramCache]: Analyzing trace with hash 567024456, now seen corresponding path program 1 times [2025-01-10 06:55:07,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:07,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561440766] [2025-01-10 06:55:07,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:07,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:07,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:55:07,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:55:07,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:07,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:07,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561440766] [2025-01-10 06:55:07,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561440766] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:07,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:07,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:55:07,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558289730] [2025-01-10 06:55:07,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:07,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:55:07,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:07,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:55:07,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:55:07,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2025-01-10 06:55:07,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2025-01-10 06:55:07,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:07,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2025-01-10 06:55:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:07,419 INFO L124 PetriNetUnfolderBase]: 133/311 cut-off events. [2025-01-10 06:55:07,419 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-01-10 06:55:07,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 311 events. 133/311 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1337 event pairs, 40 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 633. Up to 184 conditions per place. [2025-01-10 06:55:07,422 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 35 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2025-01-10 06:55:07,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 246 flow [2025-01-10 06:55:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:55:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:55:07,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-01-10 06:55:07,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5426356589147286 [2025-01-10 06:55:07,423 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 150 flow. Second operand 3 states and 70 transitions. [2025-01-10 06:55:07,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 246 flow [2025-01-10 06:55:07,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:07,425 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 172 flow [2025-01-10 06:55:07,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-01-10 06:55:07,426 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2025-01-10 06:55:07,426 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 172 flow [2025-01-10 06:55:07,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2025-01-10 06:55:07,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:07,426 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:07,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:55:07,426 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:07,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash 586527631, now seen corresponding path program 1 times [2025-01-10 06:55:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969806651] [2025-01-10 06:55:07,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:07,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:55:07,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:55:07,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:07,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:07,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969806651] [2025-01-10 06:55:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969806651] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:07,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:07,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:55:07,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640801010] [2025-01-10 06:55:07,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:07,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:07,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:07,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:07,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:07,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:07,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:07,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:07,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:07,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:07,611 INFO L124 PetriNetUnfolderBase]: 189/408 cut-off events. [2025-01-10 06:55:07,611 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2025-01-10 06:55:07,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 408 events. 189/408 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1791 event pairs, 89 based on Foata normal form. 12/393 useless extension candidates. Maximal degree in co-relation 923. Up to 278 conditions per place. [2025-01-10 06:55:07,614 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 48 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2025-01-10 06:55:07,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 322 flow [2025-01-10 06:55:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-01-10 06:55:07,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2025-01-10 06:55:07,615 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 172 flow. Second operand 4 states and 90 transitions. [2025-01-10 06:55:07,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 322 flow [2025-01-10 06:55:07,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 305 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:07,617 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 188 flow [2025-01-10 06:55:07,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2025-01-10 06:55:07,618 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2025-01-10 06:55:07,618 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 188 flow [2025-01-10 06:55:07,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:07,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:07,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:07,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:55:07,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:07,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:07,620 INFO L85 PathProgramCache]: Analyzing trace with hash 101547759, now seen corresponding path program 1 times [2025-01-10 06:55:07,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:07,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749541661] [2025-01-10 06:55:07,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:07,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:07,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:55:07,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:55:07,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:07,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:08,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749541661] [2025-01-10 06:55:08,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749541661] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845105497] [2025-01-10 06:55:08,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:08,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:08,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:08,187 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) [2025-01-10 06:55:08,190 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 [2025-01-10 06:55:08,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:55:08,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:55:08,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:08,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:08,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 06:55:08,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:08,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:55:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:08,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:09,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2025-01-10 06:55:09,124 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:55:09,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2025-01-10 06:55:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:09,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845105497] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:09,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:09,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-01-10 06:55:09,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727340154] [2025-01-10 06:55:09,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:09,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 06:55:09,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:09,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 06:55:09,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2025-01-10 06:55:09,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2025-01-10 06:55:09,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 188 flow. Second operand has 23 states, 23 states have (on average 9.565217391304348) internal successors, (220), 23 states have internal predecessors, (220), 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) [2025-01-10 06:55:09,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:09,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2025-01-10 06:55:09,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:11,616 INFO L124 PetriNetUnfolderBase]: 1302/2541 cut-off events. [2025-01-10 06:55:11,617 INFO L125 PetriNetUnfolderBase]: For 850/946 co-relation queries the response was YES. [2025-01-10 06:55:11,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6013 conditions, 2541 events. 1302/2541 cut-off events. For 850/946 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15205 event pairs, 188 based on Foata normal form. 74/2452 useless extension candidates. Maximal degree in co-relation 5998. Up to 416 conditions per place. [2025-01-10 06:55:11,641 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 215 selfloop transitions, 66 changer transitions 2/289 dead transitions. [2025-01-10 06:55:11,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 289 transitions, 1573 flow [2025-01-10 06:55:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-10 06:55:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-01-10 06:55:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 498 transitions. [2025-01-10 06:55:11,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41362126245847175 [2025-01-10 06:55:11,648 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 188 flow. Second operand 28 states and 498 transitions. [2025-01-10 06:55:11,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 289 transitions, 1573 flow [2025-01-10 06:55:11,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 289 transitions, 1555 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:11,659 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 723 flow [2025-01-10 06:55:11,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=723, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2025-01-10 06:55:11,660 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2025-01-10 06:55:11,660 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 723 flow [2025-01-10 06:55:11,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.565217391304348) internal successors, (220), 23 states have internal predecessors, (220), 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) [2025-01-10 06:55:11,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:11,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:11,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 06:55:11,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-10 06:55:11,862 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:11,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 646427715, now seen corresponding path program 2 times [2025-01-10 06:55:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490479933] [2025-01-10 06:55:11,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:11,875 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-10 06:55:11,896 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:55:11,896 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:11,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:12,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490479933] [2025-01-10 06:55:12,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490479933] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200273107] [2025-01-10 06:55:12,333 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:12,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:12,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:12,335 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) [2025-01-10 06:55:12,337 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 [2025-01-10 06:55:12,379 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-10 06:55:12,395 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:55:12,395 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:12,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 06:55:12,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:12,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:55:12,732 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:55:12,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2025-01-10 06:55:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:12,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-01-10 06:55:12,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-01-10 06:55:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:13,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200273107] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:13,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:13,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 19 [2025-01-10 06:55:13,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770538305] [2025-01-10 06:55:13,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:13,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 06:55:13,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:13,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 06:55:13,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2025-01-10 06:55:13,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2025-01-10 06:55:13,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 723 flow. Second operand has 21 states, 21 states have (on average 9.666666666666666) internal successors, (203), 21 states have internal predecessors, (203), 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) [2025-01-10 06:55:13,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:13,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2025-01-10 06:55:13,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:14,559 INFO L124 PetriNetUnfolderBase]: 1596/3140 cut-off events. [2025-01-10 06:55:14,559 INFO L125 PetriNetUnfolderBase]: For 13927/14025 co-relation queries the response was YES. [2025-01-10 06:55:14,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11425 conditions, 3140 events. 1596/3140 cut-off events. For 13927/14025 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19819 event pairs, 256 based on Foata normal form. 38/3177 useless extension candidates. Maximal degree in co-relation 11389. Up to 1329 conditions per place. [2025-01-10 06:55:14,589 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 169 selfloop transitions, 48 changer transitions 0/223 dead transitions. [2025-01-10 06:55:14,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 223 transitions, 1803 flow [2025-01-10 06:55:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 06:55:14,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 06:55:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 262 transitions. [2025-01-10 06:55:14,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35841313269493846 [2025-01-10 06:55:14,591 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 723 flow. Second operand 17 states and 262 transitions. [2025-01-10 06:55:14,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 223 transitions, 1803 flow [2025-01-10 06:55:14,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 223 transitions, 1728 flow, removed 30 selfloop flow, removed 4 redundant places. [2025-01-10 06:55:14,668 INFO L231 Difference]: Finished difference. Result has 117 places, 121 transitions, 914 flow [2025-01-10 06:55:14,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=914, PETRI_PLACES=117, PETRI_TRANSITIONS=121} [2025-01-10 06:55:14,670 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2025-01-10 06:55:14,670 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 121 transitions, 914 flow [2025-01-10 06:55:14,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.666666666666666) internal successors, (203), 21 states have internal predecessors, (203), 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) [2025-01-10 06:55:14,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:14,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:14,679 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 [2025-01-10 06:55:14,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:14,871 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:14,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash -517215164, now seen corresponding path program 1 times [2025-01-10 06:55:14,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:14,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656354332] [2025-01-10 06:55:14,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:14,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:14,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:55:14,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:55:14,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:14,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:15,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656354332] [2025-01-10 06:55:15,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656354332] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176916494] [2025-01-10 06:55:15,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:15,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:15,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:15,266 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) [2025-01-10 06:55:15,268 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 [2025-01-10 06:55:15,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:55:15,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:55:15,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:15,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:15,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 06:55:15,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:15,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:55:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:15,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:15,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-01-10 06:55:15,954 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:55:15,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-01-10 06:55:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176916494] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:16,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-01-10 06:55:16,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696327108] [2025-01-10 06:55:16,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:16,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 06:55:16,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:16,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 06:55:16,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2025-01-10 06:55:16,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-01-10 06:55:16,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 121 transitions, 914 flow. Second operand has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 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) [2025-01-10 06:55:16,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:16,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-01-10 06:55:16,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:17,725 INFO L124 PetriNetUnfolderBase]: 1653/3544 cut-off events. [2025-01-10 06:55:17,725 INFO L125 PetriNetUnfolderBase]: For 18940/19042 co-relation queries the response was YES. [2025-01-10 06:55:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12895 conditions, 3544 events. 1653/3544 cut-off events. For 18940/19042 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 24421 event pairs, 361 based on Foata normal form. 142/3664 useless extension candidates. Maximal degree in co-relation 12853. Up to 588 conditions per place. [2025-01-10 06:55:17,758 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 173 selfloop transitions, 86 changer transitions 0/273 dead transitions. [2025-01-10 06:55:17,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 273 transitions, 2297 flow [2025-01-10 06:55:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 06:55:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-10 06:55:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 329 transitions. [2025-01-10 06:55:17,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40269277845777235 [2025-01-10 06:55:17,762 INFO L175 Difference]: Start difference. First operand has 117 places, 121 transitions, 914 flow. Second operand 19 states and 329 transitions. [2025-01-10 06:55:17,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 273 transitions, 2297 flow [2025-01-10 06:55:17,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 273 transitions, 2249 flow, removed 14 selfloop flow, removed 6 redundant places. [2025-01-10 06:55:17,806 INFO L231 Difference]: Finished difference. Result has 138 places, 150 transitions, 1442 flow [2025-01-10 06:55:17,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1442, PETRI_PLACES=138, PETRI_TRANSITIONS=150} [2025-01-10 06:55:17,807 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2025-01-10 06:55:17,807 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 150 transitions, 1442 flow [2025-01-10 06:55:17,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 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) [2025-01-10 06:55:17,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:17,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:17,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 06:55:18,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 06:55:18,008 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:18,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1335460640, now seen corresponding path program 1 times [2025-01-10 06:55:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:18,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854295033] [2025-01-10 06:55:18,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:18,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:55:18,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:55:18,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:18,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:18,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854295033] [2025-01-10 06:55:18,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854295033] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125361367] [2025-01-10 06:55:18,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:18,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:18,388 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) [2025-01-10 06:55:18,389 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 [2025-01-10 06:55:18,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:55:18,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:55:18,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:18,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:18,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 06:55:18,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:18,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:55:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:18,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:19,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-01-10 06:55:19,052 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:55:19,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-01-10 06:55:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:19,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125361367] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:19,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:19,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-01-10 06:55:19,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515517119] [2025-01-10 06:55:19,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:19,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 06:55:19,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:19,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 06:55:19,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2025-01-10 06:55:19,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2025-01-10 06:55:19,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 150 transitions, 1442 flow. Second operand has 23 states, 23 states have (on average 9.695652173913043) internal successors, (223), 23 states have internal predecessors, (223), 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) [2025-01-10 06:55:19,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:19,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2025-01-10 06:55:19,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:20,911 INFO L124 PetriNetUnfolderBase]: 2080/4327 cut-off events. [2025-01-10 06:55:20,911 INFO L125 PetriNetUnfolderBase]: For 27683/27815 co-relation queries the response was YES. [2025-01-10 06:55:20,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17190 conditions, 4327 events. 2080/4327 cut-off events. For 27683/27815 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 30248 event pairs, 319 based on Foata normal form. 26/4328 useless extension candidates. Maximal degree in co-relation 17138. Up to 964 conditions per place. [2025-01-10 06:55:20,942 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 162 selfloop transitions, 108 changer transitions 11/294 dead transitions. [2025-01-10 06:55:20,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 294 transitions, 2968 flow [2025-01-10 06:55:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 06:55:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-10 06:55:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 331 transitions. [2025-01-10 06:55:20,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36655592469545956 [2025-01-10 06:55:20,945 INFO L175 Difference]: Start difference. First operand has 138 places, 150 transitions, 1442 flow. Second operand 21 states and 331 transitions. [2025-01-10 06:55:20,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 294 transitions, 2968 flow [2025-01-10 06:55:21,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 294 transitions, 2904 flow, removed 16 selfloop flow, removed 6 redundant places. [2025-01-10 06:55:21,041 INFO L231 Difference]: Finished difference. Result has 154 places, 176 transitions, 2097 flow [2025-01-10 06:55:21,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2097, PETRI_PLACES=154, PETRI_TRANSITIONS=176} [2025-01-10 06:55:21,042 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2025-01-10 06:55:21,042 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 176 transitions, 2097 flow [2025-01-10 06:55:21,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.695652173913043) internal successors, (223), 23 states have internal predecessors, (223), 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) [2025-01-10 06:55:21,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:21,044 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-01-10 06:55:21,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:21,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:21,244 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:21,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1914643374, now seen corresponding path program 2 times [2025-01-10 06:55:21,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:21,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732180530] [2025-01-10 06:55:21,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:21,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:21,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:55:21,259 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:55:21,262 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:21,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:55:21,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732180530] [2025-01-10 06:55:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732180530] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532419747] [2025-01-10 06:55:21,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:21,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:21,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:21,304 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) [2025-01-10 06:55:21,306 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 [2025-01-10 06:55:21,352 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:55:21,366 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:55:21,366 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:21,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:21,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:55:21,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:55:21,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:55:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532419747] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:21,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-01-10 06:55:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826512510] [2025-01-10 06:55:21,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:21,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:21,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:21,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:21,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:21,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 176 transitions, 2097 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-01-10 06:55:21,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:21,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:21,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:21,888 INFO L124 PetriNetUnfolderBase]: 1390/3161 cut-off events. [2025-01-10 06:55:21,888 INFO L125 PetriNetUnfolderBase]: For 29485/29620 co-relation queries the response was YES. [2025-01-10 06:55:21,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 3161 events. 1390/3161 cut-off events. For 29485/29620 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22463 event pairs, 888 based on Foata normal form. 7/3136 useless extension candidates. Maximal degree in co-relation 14224. Up to 2325 conditions per place. [2025-01-10 06:55:21,926 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 139 selfloop transitions, 15 changer transitions 0/175 dead transitions. [2025-01-10 06:55:21,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 175 transitions, 2395 flow [2025-01-10 06:55:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-01-10 06:55:21,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4011627906976744 [2025-01-10 06:55:21,927 INFO L175 Difference]: Start difference. First operand has 154 places, 176 transitions, 2097 flow. Second operand 4 states and 69 transitions. [2025-01-10 06:55:21,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 175 transitions, 2395 flow [2025-01-10 06:55:22,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 175 transitions, 2112 flow, removed 81 selfloop flow, removed 16 redundant places. [2025-01-10 06:55:22,058 INFO L231 Difference]: Finished difference. Result has 139 places, 175 transitions, 1834 flow [2025-01-10 06:55:22,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1834, PETRI_PLACES=139, PETRI_TRANSITIONS=175} [2025-01-10 06:55:22,059 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2025-01-10 06:55:22,059 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 175 transitions, 1834 flow [2025-01-10 06:55:22,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-01-10 06:55:22,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:22,059 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:22,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 06:55:22,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:22,260 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:22,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash -196489741, now seen corresponding path program 1 times [2025-01-10 06:55:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:22,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344774424] [2025-01-10 06:55:22,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:22,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:22,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:55:22,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:55:22,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:22,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:22,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344774424] [2025-01-10 06:55:22,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344774424] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:22,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102450825] [2025-01-10 06:55:22,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:22,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:22,397 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) [2025-01-10 06:55:22,398 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 [2025-01-10 06:55:22,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:55:22,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:55:22,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:22,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:22,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:55:22,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:22,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102450825] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:22,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:22,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-01-10 06:55:22,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697260000] [2025-01-10 06:55:22,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:22,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 06:55:22,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:22,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 06:55:22,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-01-10 06:55:22,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:22,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 175 transitions, 1834 flow. Second operand has 15 states, 15 states have (on average 13.8) internal successors, (207), 15 states have internal predecessors, (207), 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) [2025-01-10 06:55:22,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:22,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:22,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:22,860 INFO L124 PetriNetUnfolderBase]: 488/1132 cut-off events. [2025-01-10 06:55:22,860 INFO L125 PetriNetUnfolderBase]: For 6194/6218 co-relation queries the response was YES. [2025-01-10 06:55:22,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 1132 events. 488/1132 cut-off events. For 6194/6218 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7002 event pairs, 300 based on Foata normal form. 60/1165 useless extension candidates. Maximal degree in co-relation 4415. Up to 510 conditions per place. [2025-01-10 06:55:22,868 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 60 selfloop transitions, 14 changer transitions 1/91 dead transitions. [2025-01-10 06:55:22,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 91 transitions, 839 flow [2025-01-10 06:55:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:55:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:55:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2025-01-10 06:55:22,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2025-01-10 06:55:22,871 INFO L175 Difference]: Start difference. First operand has 139 places, 175 transitions, 1834 flow. Second operand 8 states and 144 transitions. [2025-01-10 06:55:22,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 91 transitions, 839 flow [2025-01-10 06:55:22,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 91 transitions, 718 flow, removed 22 selfloop flow, removed 23 redundant places. [2025-01-10 06:55:22,893 INFO L231 Difference]: Finished difference. Result has 104 places, 76 transitions, 548 flow [2025-01-10 06:55:22,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=548, PETRI_PLACES=104, PETRI_TRANSITIONS=76} [2025-01-10 06:55:22,895 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2025-01-10 06:55:22,895 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 76 transitions, 548 flow [2025-01-10 06:55:22,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.8) internal successors, (207), 15 states have internal predecessors, (207), 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) [2025-01-10 06:55:22,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:22,896 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:22,905 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 [2025-01-10 06:55:23,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:23,097 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:23,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash -366673588, now seen corresponding path program 3 times [2025-01-10 06:55:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:23,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276239724] [2025-01-10 06:55:23,097 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:55:23,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:23,106 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-01-10 06:55:23,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 17 statements. [2025-01-10 06:55:23,123 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 06:55:23,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 06:55:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276239724] [2025-01-10 06:55:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276239724] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:23,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:23,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:55:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345195886] [2025-01-10 06:55:23,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:23,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:23,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:23,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:55:23,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:23,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 76 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2025-01-10 06:55:23,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:23,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:23,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:23,428 INFO L124 PetriNetUnfolderBase]: 652/1437 cut-off events. [2025-01-10 06:55:23,429 INFO L125 PetriNetUnfolderBase]: For 2978/3002 co-relation queries the response was YES. [2025-01-10 06:55:23,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5122 conditions, 1437 events. 652/1437 cut-off events. For 2978/3002 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8761 event pairs, 102 based on Foata normal form. 42/1474 useless extension candidates. Maximal degree in co-relation 5097. Up to 520 conditions per place. [2025-01-10 06:55:23,440 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 81 selfloop transitions, 16 changer transitions 0/110 dead transitions. [2025-01-10 06:55:23,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 919 flow [2025-01-10 06:55:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:55:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:55:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-01-10 06:55:23,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255813953488372 [2025-01-10 06:55:23,441 INFO L175 Difference]: Start difference. First operand has 104 places, 76 transitions, 548 flow. Second operand 5 states and 113 transitions. [2025-01-10 06:55:23,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 919 flow [2025-01-10 06:55:23,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 110 transitions, 894 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-10 06:55:23,457 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 617 flow [2025-01-10 06:55:23,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2025-01-10 06:55:23,460 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2025-01-10 06:55:23,460 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 617 flow [2025-01-10 06:55:23,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2025-01-10 06:55:23,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:23,461 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:23,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-10 06:55:23,461 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:23,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1382680736, now seen corresponding path program 1 times [2025-01-10 06:55:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:23,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982146024] [2025-01-10 06:55:23,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:23,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:55:23,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:55:23,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:23,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:23,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982146024] [2025-01-10 06:55:23,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982146024] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946627894] [2025-01-10 06:55:23,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:23,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:23,979 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) [2025-01-10 06:55:23,981 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 [2025-01-10 06:55:24,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:55:24,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:55:24,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:24,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:24,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 06:55:24,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:24,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:24,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:55:24,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2025-01-10 06:55:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 06:55:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946627894] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:24,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:55:24,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 6] total 18 [2025-01-10 06:55:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950690846] [2025-01-10 06:55:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:24,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:24,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:24,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:24,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2025-01-10 06:55:24,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-01-10 06:55:24,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:24,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:24,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-01-10 06:55:24,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:24,424 INFO L124 PetriNetUnfolderBase]: 879/1706 cut-off events. [2025-01-10 06:55:24,425 INFO L125 PetriNetUnfolderBase]: For 3990/4038 co-relation queries the response was YES. [2025-01-10 06:55:24,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6490 conditions, 1706 events. 879/1706 cut-off events. For 3990/4038 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9741 event pairs, 39 based on Foata normal form. 5/1707 useless extension candidates. Maximal degree in co-relation 6463. Up to 739 conditions per place. [2025-01-10 06:55:24,435 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 73 selfloop transitions, 28 changer transitions 0/107 dead transitions. [2025-01-10 06:55:24,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 958 flow [2025-01-10 06:55:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:55:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:55:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2025-01-10 06:55:24,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2025-01-10 06:55:24,436 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 617 flow. Second operand 5 states and 100 transitions. [2025-01-10 06:55:24,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 958 flow [2025-01-10 06:55:24,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 950 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:24,453 INFO L231 Difference]: Finished difference. Result has 110 places, 84 transitions, 760 flow [2025-01-10 06:55:24,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=760, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2025-01-10 06:55:24,454 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2025-01-10 06:55:24,454 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 760 flow [2025-01-10 06:55:24,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:24,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:24,454 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:24,462 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 [2025-01-10 06:55:24,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-10 06:55:24,655 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:24,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1518021209, now seen corresponding path program 2 times [2025-01-10 06:55:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:24,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862812970] [2025-01-10 06:55:24,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:24,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:24,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 06:55:24,669 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:55:24,669 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:24,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 06:55:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862812970] [2025-01-10 06:55:24,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862812970] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:24,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:24,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:55:24,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248117396] [2025-01-10 06:55:24,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:24,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:24,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:24,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:55:24,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:24,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2025-01-10 06:55:24,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:24,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:24,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:24,969 INFO L124 PetriNetUnfolderBase]: 720/1535 cut-off events. [2025-01-10 06:55:24,969 INFO L125 PetriNetUnfolderBase]: For 5980/6004 co-relation queries the response was YES. [2025-01-10 06:55:24,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 1535 events. 720/1535 cut-off events. For 5980/6004 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9287 event pairs, 123 based on Foata normal form. 17/1543 useless extension candidates. Maximal degree in co-relation 6435. Up to 631 conditions per place. [2025-01-10 06:55:24,980 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 81 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2025-01-10 06:55:24,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 1104 flow [2025-01-10 06:55:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:55:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:55:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2025-01-10 06:55:24,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5162790697674419 [2025-01-10 06:55:24,981 INFO L175 Difference]: Start difference. First operand has 110 places, 84 transitions, 760 flow. Second operand 5 states and 111 transitions. [2025-01-10 06:55:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 1104 flow [2025-01-10 06:55:24,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 1077 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:25,000 INFO L231 Difference]: Finished difference. Result has 113 places, 85 transitions, 793 flow [2025-01-10 06:55:25,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2025-01-10 06:55:25,001 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2025-01-10 06:55:25,001 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 793 flow [2025-01-10 06:55:25,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2025-01-10 06:55:25,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:25,001 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:25,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-10 06:55:25,002 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:25,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash -86569595, now seen corresponding path program 2 times [2025-01-10 06:55:25,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:25,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220746399] [2025-01-10 06:55:25,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:25,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:25,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 06:55:25,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:55:25,016 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:25,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 06:55:25,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:25,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220746399] [2025-01-10 06:55:25,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220746399] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:25,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:25,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:55:25,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815472024] [2025-01-10 06:55:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:25,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:25,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:25,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:55:25,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-01-10 06:55:25,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 793 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-01-10 06:55:25,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:25,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-01-10 06:55:25,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:25,313 INFO L124 PetriNetUnfolderBase]: 793/1642 cut-off events. [2025-01-10 06:55:25,313 INFO L125 PetriNetUnfolderBase]: For 7254/7284 co-relation queries the response was YES. [2025-01-10 06:55:25,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6893 conditions, 1642 events. 793/1642 cut-off events. For 7254/7284 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9684 event pairs, 331 based on Foata normal form. 15/1649 useless extension candidates. Maximal degree in co-relation 6861. Up to 1096 conditions per place. [2025-01-10 06:55:25,320 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 69 selfloop transitions, 7 changer transitions 12/102 dead transitions. [2025-01-10 06:55:25,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 102 transitions, 1054 flow [2025-01-10 06:55:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:55:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:55:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2025-01-10 06:55:25,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2025-01-10 06:55:25,321 INFO L175 Difference]: Start difference. First operand has 113 places, 85 transitions, 793 flow. Second operand 5 states and 100 transitions. [2025-01-10 06:55:25,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 102 transitions, 1054 flow [2025-01-10 06:55:25,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 102 transitions, 1021 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-01-10 06:55:25,335 INFO L231 Difference]: Finished difference. Result has 114 places, 78 transitions, 699 flow [2025-01-10 06:55:25,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=699, PETRI_PLACES=114, PETRI_TRANSITIONS=78} [2025-01-10 06:55:25,335 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2025-01-10 06:55:25,335 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 78 transitions, 699 flow [2025-01-10 06:55:25,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-01-10 06:55:25,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:25,336 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:25,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-10 06:55:25,336 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:25,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1986254246, now seen corresponding path program 1 times [2025-01-10 06:55:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967376637] [2025-01-10 06:55:25,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:25,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:55:25,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:55:25,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:25,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:25,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967376637] [2025-01-10 06:55:25,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967376637] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358931275] [2025-01-10 06:55:25,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:25,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:25,434 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) [2025-01-10 06:55:25,436 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 [2025-01-10 06:55:25,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:55:25,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:55:25,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:25,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:25,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:25,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:25,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:55:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358931275] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:25,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:55:25,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-01-10 06:55:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332077304] [2025-01-10 06:55:25,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:25,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:25,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:25,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:55:25,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2025-01-10 06:55:25,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 78 transitions, 699 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:25,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:25,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2025-01-10 06:55:25,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:25,728 INFO L124 PetriNetUnfolderBase]: 754/1710 cut-off events. [2025-01-10 06:55:25,729 INFO L125 PetriNetUnfolderBase]: For 8149/8229 co-relation queries the response was YES. [2025-01-10 06:55:25,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7157 conditions, 1710 events. 754/1710 cut-off events. For 8149/8229 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10426 event pairs, 183 based on Foata normal form. 33/1727 useless extension candidates. Maximal degree in co-relation 7125. Up to 522 conditions per place. [2025-01-10 06:55:25,742 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 68 selfloop transitions, 19 changer transitions 11/110 dead transitions. [2025-01-10 06:55:25,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 1086 flow [2025-01-10 06:55:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-01-10 06:55:25,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2025-01-10 06:55:25,743 INFO L175 Difference]: Start difference. First operand has 114 places, 78 transitions, 699 flow. Second operand 4 states and 104 transitions. [2025-01-10 06:55:25,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 1086 flow [2025-01-10 06:55:25,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 110 transitions, 1027 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-01-10 06:55:25,761 INFO L231 Difference]: Finished difference. Result has 103 places, 73 transitions, 691 flow [2025-01-10 06:55:25,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=691, PETRI_PLACES=103, PETRI_TRANSITIONS=73} [2025-01-10 06:55:25,762 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2025-01-10 06:55:25,762 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 73 transitions, 691 flow [2025-01-10 06:55:25,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:25,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:25,762 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:25,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:25,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 06:55:25,964 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:25,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -135573010, now seen corresponding path program 2 times [2025-01-10 06:55:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:25,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975966934] [2025-01-10 06:55:25,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:25,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:25,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 06:55:25,980 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:55:25,984 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:25,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:55:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:26,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975966934] [2025-01-10 06:55:26,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975966934] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:26,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:26,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:55:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956215811] [2025-01-10 06:55:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:26,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:55:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:26,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:55:26,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:55:26,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-01-10 06:55:26,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 73 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-01-10 06:55:26,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:26,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-01-10 06:55:26,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:26,247 INFO L124 PetriNetUnfolderBase]: 814/1702 cut-off events. [2025-01-10 06:55:26,247 INFO L125 PetriNetUnfolderBase]: For 11169/11230 co-relation queries the response was YES. [2025-01-10 06:55:26,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1702 events. 814/1702 cut-off events. For 11169/11230 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9856 event pairs, 249 based on Foata normal form. 58/1701 useless extension candidates. Maximal degree in co-relation 7531. Up to 589 conditions per place. [2025-01-10 06:55:26,259 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 96 selfloop transitions, 7 changer transitions 1/113 dead transitions. [2025-01-10 06:55:26,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 113 transitions, 1443 flow [2025-01-10 06:55:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2025-01-10 06:55:26,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2025-01-10 06:55:26,260 INFO L175 Difference]: Start difference. First operand has 103 places, 73 transitions, 691 flow. Second operand 4 states and 81 transitions. [2025-01-10 06:55:26,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 113 transitions, 1443 flow [2025-01-10 06:55:26,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 1368 flow, removed 29 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:26,277 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 658 flow [2025-01-10 06:55:26,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=658, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2025-01-10 06:55:26,278 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2025-01-10 06:55:26,278 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 658 flow [2025-01-10 06:55:26,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-01-10 06:55:26,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:26,278 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:26,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-10 06:55:26,278 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:26,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1885917469, now seen corresponding path program 2 times [2025-01-10 06:55:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:26,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049136469] [2025-01-10 06:55:26,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:26,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-10 06:55:26,293 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:55:26,294 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:26,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 06:55:26,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:26,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049136469] [2025-01-10 06:55:26,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049136469] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:26,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:26,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:55:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788783014] [2025-01-10 06:55:26,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:26,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:26,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:26,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:55:26,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-01-10 06:55:26,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:26,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:26,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-01-10 06:55:26,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:26,587 INFO L124 PetriNetUnfolderBase]: 945/1830 cut-off events. [2025-01-10 06:55:26,587 INFO L125 PetriNetUnfolderBase]: For 8711/8757 co-relation queries the response was YES. [2025-01-10 06:55:26,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7869 conditions, 1830 events. 945/1830 cut-off events. For 8711/8757 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9917 event pairs, 365 based on Foata normal form. 5/1827 useless extension candidates. Maximal degree in co-relation 7838. Up to 1454 conditions per place. [2025-01-10 06:55:26,597 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 62 selfloop transitions, 3 changer transitions 18/90 dead transitions. [2025-01-10 06:55:26,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 889 flow [2025-01-10 06:55:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:55:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:55:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-01-10 06:55:26,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2025-01-10 06:55:26,598 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 658 flow. Second operand 6 states and 108 transitions. [2025-01-10 06:55:26,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 889 flow [2025-01-10 06:55:26,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 875 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:26,606 INFO L231 Difference]: Finished difference. Result has 94 places, 69 transitions, 619 flow [2025-01-10 06:55:26,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2025-01-10 06:55:26,607 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2025-01-10 06:55:26,607 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 619 flow [2025-01-10 06:55:26,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:26,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:26,607 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:26,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-10 06:55:26,607 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:26,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:26,607 INFO L85 PathProgramCache]: Analyzing trace with hash 92204525, now seen corresponding path program 1 times [2025-01-10 06:55:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:26,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306916913] [2025-01-10 06:55:26,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:26,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:55:26,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:55:26,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:26,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:55:26,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:26,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306916913] [2025-01-10 06:55:26,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306916913] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:26,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102244896] [2025-01-10 06:55:26,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:26,663 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:26,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 06:55:26,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:55:26,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:55:26,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:26,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:26,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:26,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:55:26,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:55:26,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102244896] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:26,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:26,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:55:26,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598056100] [2025-01-10 06:55:26,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:26,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:55:26,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:26,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:55:26,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:55:26,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 06:55:26,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 619 flow. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 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) [2025-01-10 06:55:26,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:26,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 06:55:26,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:27,275 INFO L124 PetriNetUnfolderBase]: 1229/2606 cut-off events. [2025-01-10 06:55:27,275 INFO L125 PetriNetUnfolderBase]: For 14096/14205 co-relation queries the response was YES. [2025-01-10 06:55:27,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10283 conditions, 2606 events. 1229/2606 cut-off events. For 14096/14205 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 15444 event pairs, 260 based on Foata normal form. 0/2541 useless extension candidates. Maximal degree in co-relation 10250. Up to 1077 conditions per place. [2025-01-10 06:55:27,293 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 187 selfloop transitions, 12 changer transitions 0/209 dead transitions. [2025-01-10 06:55:27,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 209 transitions, 2533 flow [2025-01-10 06:55:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:55:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:55:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2025-01-10 06:55:27,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49534883720930234 [2025-01-10 06:55:27,294 INFO L175 Difference]: Start difference. First operand has 94 places, 69 transitions, 619 flow. Second operand 10 states and 213 transitions. [2025-01-10 06:55:27,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 209 transitions, 2533 flow [2025-01-10 06:55:27,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 209 transitions, 2469 flow, removed 29 selfloop flow, removed 6 redundant places. [2025-01-10 06:55:27,305 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 677 flow [2025-01-10 06:55:27,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=677, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2025-01-10 06:55:27,306 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2025-01-10 06:55:27,306 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 677 flow [2025-01-10 06:55:27,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 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) [2025-01-10 06:55:27,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:27,306 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] [2025-01-10 06:55:27,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:27,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:27,507 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:27,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash 796080947, now seen corresponding path program 1 times [2025-01-10 06:55:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:27,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4341373] [2025-01-10 06:55:27,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:27,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 06:55:27,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 06:55:27,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:27,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4341373] [2025-01-10 06:55:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4341373] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521142985] [2025-01-10 06:55:28,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:28,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:28,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:28,145 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:28,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 06:55:28,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 06:55:28,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 06:55:28,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:28,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:28,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-10 06:55:28,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:28,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 06:55:28,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:55:28,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2025-01-10 06:55:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:28,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:29,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2025-01-10 06:55:29,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:55:29,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 93 [2025-01-10 06:55:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:29,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521142985] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:29,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:29,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2025-01-10 06:55:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334746755] [2025-01-10 06:55:29,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:29,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-10 06:55:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:29,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-10 06:55:29,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2025-01-10 06:55:29,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2025-01-10 06:55:29,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 677 flow. Second operand has 39 states, 39 states have (on average 9.564102564102564) internal successors, (373), 39 states have internal predecessors, (373), 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) [2025-01-10 06:55:29,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:29,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2025-01-10 06:55:29,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:47,060 INFO L124 PetriNetUnfolderBase]: 10252/19358 cut-off events. [2025-01-10 06:55:47,060 INFO L125 PetriNetUnfolderBase]: For 92736/92942 co-relation queries the response was YES. [2025-01-10 06:55:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80992 conditions, 19358 events. 10252/19358 cut-off events. For 92736/92942 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 154039 event pairs, 429 based on Foata normal form. 698/20053 useless extension candidates. Maximal degree in co-relation 80960. Up to 3521 conditions per place. [2025-01-10 06:55:47,209 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 1402 selfloop transitions, 417 changer transitions 76/1900 dead transitions. [2025-01-10 06:55:47,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1900 transitions, 17214 flow [2025-01-10 06:55:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2025-01-10 06:55:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2025-01-10 06:55:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 2306 transitions. [2025-01-10 06:55:47,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38581228040823157 [2025-01-10 06:55:47,214 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 677 flow. Second operand 139 states and 2306 transitions. [2025-01-10 06:55:47,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1900 transitions, 17214 flow [2025-01-10 06:55:47,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1900 transitions, 15590 flow, removed 775 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:47,324 INFO L231 Difference]: Finished difference. Result has 285 places, 544 transitions, 7234 flow [2025-01-10 06:55:47,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=139, PETRI_FLOW=7234, PETRI_PLACES=285, PETRI_TRANSITIONS=544} [2025-01-10 06:55:47,324 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 243 predicate places. [2025-01-10 06:55:47,324 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 544 transitions, 7234 flow [2025-01-10 06:55:47,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 9.564102564102564) internal successors, (373), 39 states have internal predecessors, (373), 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) [2025-01-10 06:55:47,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:47,325 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] [2025-01-10 06:55:47,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 06:55:47,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:47,525 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:55:47,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:47,526 INFO L85 PathProgramCache]: Analyzing trace with hash -423624529, now seen corresponding path program 2 times [2025-01-10 06:55:47,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:47,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968504635] [2025-01-10 06:55:47,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:47,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:47,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-10 06:55:47,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 06:55:47,541 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:47,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:48,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:48,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968504635] [2025-01-10 06:55:48,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968504635] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:48,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977900179] [2025-01-10 06:55:48,282 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:48,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:48,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:48,284 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:48,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 06:55:48,340 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-10 06:55:48,361 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 06:55:48,361 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:48,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:48,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-10 06:55:48,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:48,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:55:49,066 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-01-10 06:55:49,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2025-01-10 06:55:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:49,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:49,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 67 [2025-01-10 06:55:49,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:55:49,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 108 [2025-01-10 06:55:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977900179] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:49,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 38 [2025-01-10 06:55:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915980403] [2025-01-10 06:55:49,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:49,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-01-10 06:55:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:49,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-01-10 06:55:49,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1360, Unknown=0, NotChecked=0, Total=1560 [2025-01-10 06:55:50,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-01-10 06:55:50,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 544 transitions, 7234 flow. Second operand has 40 states, 40 states have (on average 8.575) internal successors, (343), 40 states have internal predecessors, (343), 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) [2025-01-10 06:55:50,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:50,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-01-10 06:55:50,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:07,462 INFO L124 PetriNetUnfolderBase]: 23883/43717 cut-off events. [2025-01-10 06:56:07,462 INFO L125 PetriNetUnfolderBase]: For 1142754/1143266 co-relation queries the response was YES. [2025-01-10 06:56:07,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226052 conditions, 43717 events. 23883/43717 cut-off events. For 1142754/1143266 co-relation queries the response was YES. Maximal size of possible extension queue 1077. Compared 379957 event pairs, 1830 based on Foata normal form. 836/44552 useless extension candidates. Maximal degree in co-relation 225966. Up to 7664 conditions per place. [2025-01-10 06:56:08,435 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 1349 selfloop transitions, 821 changer transitions 117/2291 dead transitions. [2025-01-10 06:56:08,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 2291 transitions, 28825 flow [2025-01-10 06:56:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-01-10 06:56:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2025-01-10 06:56:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1522 transitions. [2025-01-10 06:56:08,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3436441634680515 [2025-01-10 06:56:08,446 INFO L175 Difference]: Start difference. First operand has 285 places, 544 transitions, 7234 flow. Second operand 103 states and 1522 transitions. [2025-01-10 06:56:08,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 2291 transitions, 28825 flow [2025-01-10 06:56:17,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 2291 transitions, 23880 flow, removed 2460 selfloop flow, removed 9 redundant places. [2025-01-10 06:56:17,289 INFO L231 Difference]: Finished difference. Result has 425 places, 1212 transitions, 16217 flow [2025-01-10 06:56:17,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4917, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=16217, PETRI_PLACES=425, PETRI_TRANSITIONS=1212} [2025-01-10 06:56:17,290 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 383 predicate places. [2025-01-10 06:56:17,290 INFO L471 AbstractCegarLoop]: Abstraction has has 425 places, 1212 transitions, 16217 flow [2025-01-10 06:56:17,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.575) internal successors, (343), 40 states have internal predecessors, (343), 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) [2025-01-10 06:56:17,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:17,290 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:17,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 06:56:17,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-10 06:56:17,491 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2025-01-10 06:56:17,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash -247457962, now seen corresponding path program 1 times [2025-01-10 06:56:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:17,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244658450] [2025-01-10 06:56:17,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:17,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 06:56:17,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 06:56:17,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:17,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:18,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:18,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244658450] [2025-01-10 06:56:18,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244658450] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:18,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156281296] [2025-01-10 06:56:18,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:18,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:18,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:18,144 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:18,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 06:56:18,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 06:56:18,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 06:56:18,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:18,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:18,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 06:56:18,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:18,720 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 06:56:18,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:56:18,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2025-01-10 06:56:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:18,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:19,103 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-01-10 06:56:19,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 42 [2025-01-10 06:56:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156281296] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:19,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2025-01-10 06:56:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396227309] [2025-01-10 06:56:19,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:19,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-10 06:56:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:19,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-10 06:56:19,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2025-01-10 06:56:19,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-01-10 06:56:19,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1212 transitions, 16217 flow. Second operand has 39 states, 39 states have (on average 10.487179487179487) internal successors, (409), 39 states have internal predecessors, (409), 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) [2025-01-10 06:56:19,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:19,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-01-10 06:56:19,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand