./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:23:07,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:23:07,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 05:23:07,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:23:07,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:23:07,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:23:07,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:23:07,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:23:07,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:23:07,969 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:23:07,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:23:07,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:23:07,969 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:23:07,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:23:07,970 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:23:07,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:23:07,971 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:23:07,971 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:23:07,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:23:07,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:23:07,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:23:07,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:23:07,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:23:07,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:23:07,974 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:23:07,974 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:23:07,974 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:23:07,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:23:07,974 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:23:07,974 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:23:07,974 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:23:07,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:23:07,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:23:07,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:23:07,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:23:07,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:23:07,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:23:07,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:23:07,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:23:07,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:23:07,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:23:07,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:23:07,977 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:23:07,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:23:07,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:23:07,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:23:07,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:23:07,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:23:07,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:23:07,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:23:07,978 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-28 05:23:08,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:23:08,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:23:08,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:23:08,393 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:23:08,393 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:23:08,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-28 05:23:11,437 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/data/9cf09cb1f/64fe486c88914c36a65ab462be8dfffb/FLAG872cb500e [2024-11-28 05:23:11,770 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:23:11,770 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-28 05:23:11,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/data/9cf09cb1f/64fe486c88914c36a65ab462be8dfffb/FLAG872cb500e [2024-11-28 05:23:12,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/data/9cf09cb1f/64fe486c88914c36a65ab462be8dfffb [2024-11-28 05:23:12,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:23:12,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:23:12,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:23:12,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:23:12,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:23:12,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48696fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12, skipping insertion in model container [2024-11-28 05:23:12,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:23:12,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:23:12,273 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:23:12,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:23:12,313 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:23:12,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12 WrapperNode [2024-11-28 05:23:12,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:23:12,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:23:12,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:23:12,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:23:12,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,353 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 199 [2024-11-28 05:23:12,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:23:12,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:23:12,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:23:12,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:23:12,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,384 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 05:23:12,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,392 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,393 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:23:12,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:23:12,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:23:12,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:23:12,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (1/1) ... [2024-11-28 05:23:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:23:12,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:12,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:23:12,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:23:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:23:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:23:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:23:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:23:12,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:23:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 05:23:12,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 05:23:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:23:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:23:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:23:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:23:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:23:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:23:12,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:23:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:23:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:23:12,493 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:23:12,623 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:23:12,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:23:13,208 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:23:13,208 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:23:13,697 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:23:13,698 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 05:23:13,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:23:13 BoogieIcfgContainer [2024-11-28 05:23:13,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:23:13,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:23:13,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:23:13,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:23:13,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:23:12" (1/3) ... [2024-11-28 05:23:13,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f37ad63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:23:13, skipping insertion in model container [2024-11-28 05:23:13,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:23:12" (2/3) ... [2024-11-28 05:23:13,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f37ad63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:23:13, skipping insertion in model container [2024-11-28 05:23:13,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:23:13" (3/3) ... [2024-11-28 05:23:13,711 INFO L128 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-28 05:23:13,729 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:23:13,730 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array-eq-trans.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 6 loop locations, and 12 error locations. [2024-11-28 05:23:13,731 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:23:13,803 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:23:13,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-11-28 05:23:13,906 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-11-28 05:23:13,909 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:23:13,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-28 05:23:13,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-11-28 05:23:13,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 129 flow [2024-11-28 05:23:13,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:23:13,942 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;@6faae72e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:23:13,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 05:23:13,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:23:13,947 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 05:23:13,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:23:13,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:13,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:23:13,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:13,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:13,978 INFO L85 PathProgramCache]: Analyzing trace with hash 771548, now seen corresponding path program 1 times [2024-11-28 05:23:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769962656] [2024-11-28 05:23:13,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:14,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769962656] [2024-11-28 05:23:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769962656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:14,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:23:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986109306] [2024-11-28 05:23:14,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:14,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:14,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:14,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:14,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 05:23:14,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-28 05:23:14,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:14,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 05:23:14,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:15,135 INFO L124 PetriNetUnfolderBase]: 1728/2632 cut-off events. [2024-11-28 05:23:15,135 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-28 05:23:15,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5048 conditions, 2632 events. 1728/2632 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 13597 event pairs, 995 based on Foata normal form. 3/1764 useless extension candidates. Maximal degree in co-relation 4649. Up to 2276 conditions per place. [2024-11-28 05:23:15,174 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 41 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-11-28 05:23:15,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 249 flow [2024-11-28 05:23:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:23:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:23:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-28 05:23:15,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-11-28 05:23:15,198 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 4 states and 129 transitions. [2024-11-28 05:23:15,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 249 flow [2024-11-28 05:23:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:23:15,215 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 208 flow [2024-11-28 05:23:15,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-11-28 05:23:15,222 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-28 05:23:15,222 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 208 flow [2024-11-28 05:23:15,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-28 05:23:15,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:15,223 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 05:23:15,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:23:15,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:15,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1511112887, now seen corresponding path program 1 times [2024-11-28 05:23:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:15,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698304953] [2024-11-28 05:23:15,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:15,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:15,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:15,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698304953] [2024-11-28 05:23:15,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698304953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849977999] [2024-11-28 05:23:15,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:15,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:15,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:15,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:15,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:23:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:15,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:23:15,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:15,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:23:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849977999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:15,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:23:15,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 05:23:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125660141] [2024-11-28 05:23:15,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:15,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:23:15,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:15,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:23:15,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:23:15,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 05:23:15,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2024-11-28 05:23:15,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:15,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 05:23:15,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:16,340 INFO L124 PetriNetUnfolderBase]: 1728/2629 cut-off events. [2024-11-28 05:23:16,340 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-28 05:23:16,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 2629 events. 1728/2629 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 13605 event pairs, 995 based on Foata normal form. 3/1766 useless extension candidates. Maximal degree in co-relation 4952. Up to 2261 conditions per place. [2024-11-28 05:23:16,365 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 31 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-11-28 05:23:16,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 292 flow [2024-11-28 05:23:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:23:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:23:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-28 05:23:16,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-11-28 05:23:16,368 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 208 flow. Second operand 6 states and 159 transitions. [2024-11-28 05:23:16,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 292 flow [2024-11-28 05:23:16,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:23:16,372 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 230 flow [2024-11-28 05:23:16,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-28 05:23:16,373 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-11-28 05:23:16,373 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 230 flow [2024-11-28 05:23:16,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2024-11-28 05:23:16,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:16,374 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 05:23:16,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:23:16,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:16,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:16,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -400139992, now seen corresponding path program 1 times [2024-11-28 05:23:16,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:16,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351489818] [2024-11-28 05:23:16,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:16,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351489818] [2024-11-28 05:23:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351489818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642882534] [2024-11-28 05:23:16,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:16,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:16,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:16,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:16,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:23:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:16,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:23:16,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:16,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642882534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:16,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:16,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 05:23:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947365356] [2024-11-28 05:23:16,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:16,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:23:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:16,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:23:16,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:23:17,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 05:23:17,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2024-11-28 05:23:17,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:17,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 05:23:17,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:17,601 INFO L124 PetriNetUnfolderBase]: 1737/2665 cut-off events. [2024-11-28 05:23:17,601 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-28 05:23:17,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 2665 events. 1737/2665 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13946 event pairs, 995 based on Foata normal form. 9/1808 useless extension candidates. Maximal degree in co-relation 4954. Up to 2276 conditions per place. [2024-11-28 05:23:17,621 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 38 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2024-11-28 05:23:17,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 554 flow [2024-11-28 05:23:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:23:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:23:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-11-28 05:23:17,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-11-28 05:23:17,625 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 230 flow. Second operand 10 states and 264 transitions. [2024-11-28 05:23:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 554 flow [2024-11-28 05:23:17,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 471 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-28 05:23:17,632 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 445 flow [2024-11-28 05:23:17,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2024-11-28 05:23:17,634 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-28 05:23:17,635 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 445 flow [2024-11-28 05:23:17,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2024-11-28 05:23:17,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:17,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:17,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:23:17,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:17,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:17,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1327114274, now seen corresponding path program 1 times [2024-11-28 05:23:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:17,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002248700] [2024-11-28 05:23:17,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:17,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002248700] [2024-11-28 05:23:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002248700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:17,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:17,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:23:17,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224255195] [2024-11-28 05:23:17,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:17,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:17,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:17,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:17,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 05:23:17,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-28 05:23:17,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:17,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 05:23:17,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:18,414 INFO L124 PetriNetUnfolderBase]: 2009/3039 cut-off events. [2024-11-28 05:23:18,414 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-28 05:23:18,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5933 conditions, 3039 events. 2009/3039 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 16112 event pairs, 829 based on Foata normal form. 86/2122 useless extension candidates. Maximal degree in co-relation 5835. Up to 1981 conditions per place. [2024-11-28 05:23:18,430 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 87 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-28 05:23:18,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 660 flow [2024-11-28 05:23:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:23:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:23:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-28 05:23:18,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-11-28 05:23:18,432 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 445 flow. Second operand 4 states and 143 transitions. [2024-11-28 05:23:18,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 660 flow [2024-11-28 05:23:18,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 623 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-28 05:23:18,436 INFO L231 Difference]: Finished difference. Result has 68 places, 89 transitions, 412 flow [2024-11-28 05:23:18,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=68, PETRI_TRANSITIONS=89} [2024-11-28 05:23:18,437 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-28 05:23:18,437 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 89 transitions, 412 flow [2024-11-28 05:23:18,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-28 05:23:18,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:18,438 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:18,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:23:18,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:18,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:18,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1809129645, now seen corresponding path program 1 times [2024-11-28 05:23:18,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:18,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809161068] [2024-11-28 05:23:18,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:18,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:18,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809161068] [2024-11-28 05:23:18,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809161068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:18,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:23:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316518731] [2024-11-28 05:23:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:18,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:18,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:18,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:18,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:18,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 05:23:18,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 89 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-28 05:23:18,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:18,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 05:23:18,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:19,079 INFO L124 PetriNetUnfolderBase]: 3164/4616 cut-off events. [2024-11-28 05:23:19,080 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-11-28 05:23:19,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9428 conditions, 4616 events. 3164/4616 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24582 event pairs, 657 based on Foata normal form. 86/3529 useless extension candidates. Maximal degree in co-relation 9334. Up to 2383 conditions per place. [2024-11-28 05:23:19,117 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 112 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-28 05:23:19,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 738 flow [2024-11-28 05:23:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:23:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:23:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-28 05:23:19,120 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-11-28 05:23:19,121 INFO L175 Difference]: Start difference. First operand has 68 places, 89 transitions, 412 flow. Second operand 4 states and 168 transitions. [2024-11-28 05:23:19,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 738 flow [2024-11-28 05:23:19,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 131 transitions, 728 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:23:19,127 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 426 flow [2024-11-28 05:23:19,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2024-11-28 05:23:19,129 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-28 05:23:19,131 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 426 flow [2024-11-28 05:23:19,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-28 05:23:19,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:19,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:19,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:23:19,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:19,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1676917769, now seen corresponding path program 1 times [2024-11-28 05:23:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413666972] [2024-11-28 05:23:19,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:19,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:19,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413666972] [2024-11-28 05:23:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413666972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:19,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:23:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163363822] [2024-11-28 05:23:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:19,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:19,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:19,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:19,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 05:23:19,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-28 05:23:19,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:19,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 05:23:19,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:20,288 INFO L124 PetriNetUnfolderBase]: 5476/8005 cut-off events. [2024-11-28 05:23:20,288 INFO L125 PetriNetUnfolderBase]: For 1192/1304 co-relation queries the response was YES. [2024-11-28 05:23:20,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16763 conditions, 8005 events. 5476/8005 cut-off events. For 1192/1304 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 45083 event pairs, 1108 based on Foata normal form. 152/6207 useless extension candidates. Maximal degree in co-relation 16667. Up to 4449 conditions per place. [2024-11-28 05:23:20,343 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 116 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-28 05:23:20,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 779 flow [2024-11-28 05:23:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:23:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:23:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-28 05:23:20,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-11-28 05:23:20,346 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 426 flow. Second operand 4 states and 167 transitions. [2024-11-28 05:23:20,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 779 flow [2024-11-28 05:23:20,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:23:20,354 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 446 flow [2024-11-28 05:23:20,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2024-11-28 05:23:20,355 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-11-28 05:23:20,355 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 446 flow [2024-11-28 05:23:20,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-28 05:23:20,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:20,355 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:20,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:23:20,355 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:20,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1602289019, now seen corresponding path program 1 times [2024-11-28 05:23:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:20,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217138020] [2024-11-28 05:23:20,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:20,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:20,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:20,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217138020] [2024-11-28 05:23:20,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217138020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:20,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:23:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522463779] [2024-11-28 05:23:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:20,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:20,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:20,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:20,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:20,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 05:23:20,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-28 05:23:20,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:20,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 05:23:20,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:21,799 INFO L124 PetriNetUnfolderBase]: 8504/12462 cut-off events. [2024-11-28 05:23:21,800 INFO L125 PetriNetUnfolderBase]: For 3510/3962 co-relation queries the response was YES. [2024-11-28 05:23:21,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27543 conditions, 12462 events. 8504/12462 cut-off events. For 3510/3962 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 73213 event pairs, 2163 based on Foata normal form. 224/10421 useless extension candidates. Maximal degree in co-relation 27445. Up to 6413 conditions per place. [2024-11-28 05:23:21,895 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 119 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-28 05:23:21,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 824 flow [2024-11-28 05:23:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:23:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:23:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-28 05:23:21,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-28 05:23:21,898 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 446 flow. Second operand 4 states and 164 transitions. [2024-11-28 05:23:21,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 824 flow [2024-11-28 05:23:21,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:23:21,903 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 466 flow [2024-11-28 05:23:21,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2024-11-28 05:23:21,904 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-28 05:23:21,904 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 466 flow [2024-11-28 05:23:21,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-28 05:23:21,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:21,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:21,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:23:21,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:21,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1145902761, now seen corresponding path program 1 times [2024-11-28 05:23:21,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:21,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728479255] [2024-11-28 05:23:21,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:21,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:23:22,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:22,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728479255] [2024-11-28 05:23:22,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728479255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:22,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:23:22,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574798535] [2024-11-28 05:23:22,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:22,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:22,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:22,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:22,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:22,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 05:23:22,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-28 05:23:22,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:22,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 05:23:22,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:23,729 INFO L124 PetriNetUnfolderBase]: 9178/14727 cut-off events. [2024-11-28 05:23:23,729 INFO L125 PetriNetUnfolderBase]: For 4969/5108 co-relation queries the response was YES. [2024-11-28 05:23:23,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33368 conditions, 14727 events. 9178/14727 cut-off events. For 4969/5108 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 101066 event pairs, 6652 based on Foata normal form. 0/13035 useless extension candidates. Maximal degree in co-relation 33211. Up to 9737 conditions per place. [2024-11-28 05:23:23,837 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 131 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2024-11-28 05:23:23,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 151 transitions, 1002 flow [2024-11-28 05:23:23,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:23:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:23:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-28 05:23:23,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-28 05:23:23,839 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 466 flow. Second operand 4 states and 164 transitions. [2024-11-28 05:23:23,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 151 transitions, 1002 flow [2024-11-28 05:23:23,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 151 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:23:23,847 INFO L231 Difference]: Finished difference. Result has 81 places, 95 transitions, 473 flow [2024-11-28 05:23:23,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=473, PETRI_PLACES=81, PETRI_TRANSITIONS=95} [2024-11-28 05:23:23,848 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-11-28 05:23:23,848 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 95 transitions, 473 flow [2024-11-28 05:23:23,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-28 05:23:23,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:23,848 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:23,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:23:23,849 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:23,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1968286098, now seen corresponding path program 1 times [2024-11-28 05:23:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:23,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417244053] [2024-11-28 05:23:23,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:23:23,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:23,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417244053] [2024-11-28 05:23:23,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417244053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:23,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:23,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:23:23,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704907730] [2024-11-28 05:23:23,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:23,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:23:23,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:23,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:23:23,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:23:23,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 05:23:23,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 95 transitions, 473 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:23,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:23,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 05:23:23,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:25,586 INFO L124 PetriNetUnfolderBase]: 11462/18144 cut-off events. [2024-11-28 05:23:25,586 INFO L125 PetriNetUnfolderBase]: For 6302/6714 co-relation queries the response was YES. [2024-11-28 05:23:25,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41364 conditions, 18144 events. 11462/18144 cut-off events. For 6302/6714 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 126459 event pairs, 4982 based on Foata normal form. 0/16698 useless extension candidates. Maximal degree in co-relation 41150. Up to 6489 conditions per place. [2024-11-28 05:23:25,704 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 133 selfloop transitions, 11 changer transitions 0/161 dead transitions. [2024-11-28 05:23:25,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 161 transitions, 1010 flow [2024-11-28 05:23:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:23:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:23:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-11-28 05:23:25,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2024-11-28 05:23:25,706 INFO L175 Difference]: Start difference. First operand has 81 places, 95 transitions, 473 flow. Second operand 6 states and 235 transitions. [2024-11-28 05:23:25,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 161 transitions, 1010 flow [2024-11-28 05:23:25,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 161 transitions, 1006 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 05:23:25,713 INFO L231 Difference]: Finished difference. Result has 87 places, 97 transitions, 514 flow [2024-11-28 05:23:25,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=87, PETRI_TRANSITIONS=97} [2024-11-28 05:23:25,714 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2024-11-28 05:23:25,714 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 97 transitions, 514 flow [2024-11-28 05:23:25,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:25,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:25,717 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 05:23:25,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:23:25,717 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:25,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1636434845, now seen corresponding path program 2 times [2024-11-28 05:23:25,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:25,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816050731] [2024-11-28 05:23:25,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:23:25,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:25,736 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:23:25,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:23:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 05:23:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816050731] [2024-11-28 05:23:25,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816050731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346321429] [2024-11-28 05:23:25,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:23:25,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:25,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:25,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:25,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:23:26,077 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:23:26,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:23:26,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:23:26,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 05:23:26,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 05:23:26,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346321429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:26,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 05:23:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064638139] [2024-11-28 05:23:26,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:26,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:26,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:26,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:26,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 05:23:26,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 97 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:26,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:26,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 05:23:26,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:27,753 INFO L124 PetriNetUnfolderBase]: 11462/18824 cut-off events. [2024-11-28 05:23:27,754 INFO L125 PetriNetUnfolderBase]: For 7511/7522 co-relation queries the response was YES. [2024-11-28 05:23:27,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43328 conditions, 18824 events. 11462/18824 cut-off events. For 7511/7522 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 138696 event pairs, 8454 based on Foata normal form. 1/17975 useless extension candidates. Maximal degree in co-relation 43110. Up to 15782 conditions per place. [2024-11-28 05:23:27,848 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 66 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-11-28 05:23:27,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 96 transitions, 668 flow [2024-11-28 05:23:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:23:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:23:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-28 05:23:27,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-11-28 05:23:27,850 INFO L175 Difference]: Start difference. First operand has 87 places, 97 transitions, 514 flow. Second operand 4 states and 111 transitions. [2024-11-28 05:23:27,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 96 transitions, 668 flow [2024-11-28 05:23:27,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 96 transitions, 656 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:23:27,874 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 524 flow [2024-11-28 05:23:27,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=524, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2024-11-28 05:23:27,876 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2024-11-28 05:23:27,876 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 524 flow [2024-11-28 05:23:27,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:27,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:27,877 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-28 05:23:27,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:23:28,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:23:28,077 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:28,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1132866000, now seen corresponding path program 1 times [2024-11-28 05:23:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056483056] [2024-11-28 05:23:28,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:28,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:28,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056483056] [2024-11-28 05:23:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056483056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:28,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517339149] [2024-11-28 05:23:28,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:28,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:28,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:28,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:28,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:23:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:28,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:23:28,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:28,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:23:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517339149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:28,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-28 05:23:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422841937] [2024-11-28 05:23:28,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:28,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:23:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:28,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:23:28,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:23:28,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 05:23:28,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 524 flow. Second operand has 24 states, 24 states have (on average 19.083333333333332) internal successors, (458), 24 states have internal predecessors, (458), 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) [2024-11-28 05:23:28,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:28,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 05:23:28,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:30,892 INFO L124 PetriNetUnfolderBase]: 11504/18992 cut-off events. [2024-11-28 05:23:30,892 INFO L125 PetriNetUnfolderBase]: For 7525/7565 co-relation queries the response was YES. [2024-11-28 05:23:30,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43611 conditions, 18992 events. 11504/18992 cut-off events. For 7525/7565 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 140619 event pairs, 8454 based on Foata normal form. 36/18132 useless extension candidates. Maximal degree in co-relation 42800. Up to 15752 conditions per place. [2024-11-28 05:23:30,987 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 43 selfloop transitions, 93 changer transitions 0/150 dead transitions. [2024-11-28 05:23:30,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 1192 flow [2024-11-28 05:23:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 05:23:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 05:23:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 536 transitions. [2024-11-28 05:23:30,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-11-28 05:23:30,991 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 524 flow. Second operand 22 states and 536 transitions. [2024-11-28 05:23:30,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 1192 flow [2024-11-28 05:23:31,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 150 transitions, 1097 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:23:31,003 INFO L231 Difference]: Finished difference. Result has 110 places, 150 transitions, 1085 flow [2024-11-28 05:23:31,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1085, PETRI_PLACES=110, PETRI_TRANSITIONS=150} [2024-11-28 05:23:31,004 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 52 predicate places. [2024-11-28 05:23:31,004 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 150 transitions, 1085 flow [2024-11-28 05:23:31,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.083333333333332) internal successors, (458), 24 states have internal predecessors, (458), 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) [2024-11-28 05:23:31,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:31,005 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:31,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:23:31,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:31,209 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:31,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1846223776, now seen corresponding path program 1 times [2024-11-28 05:23:31,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:31,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544328947] [2024-11-28 05:23:31,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:31,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:23:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544328947] [2024-11-28 05:23:31,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544328947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:31,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:31,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:23:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589571555] [2024-11-28 05:23:31,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:31,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:23:31,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:31,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:23:31,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:23:31,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 05:23:31,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 150 transitions, 1085 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:31,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:31,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 05:23:31,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:32,952 INFO L124 PetriNetUnfolderBase]: 9787/15780 cut-off events. [2024-11-28 05:23:32,952 INFO L125 PetriNetUnfolderBase]: For 6698/6898 co-relation queries the response was YES. [2024-11-28 05:23:33,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37003 conditions, 15780 events. 9787/15780 cut-off events. For 6698/6898 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 109984 event pairs, 7166 based on Foata normal form. 0/15152 useless extension candidates. Maximal degree in co-relation 36710. Up to 12397 conditions per place. [2024-11-28 05:23:33,041 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 200 selfloop transitions, 17 changer transitions 5/238 dead transitions. [2024-11-28 05:23:33,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 238 transitions, 2179 flow [2024-11-28 05:23:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:23:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:23:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-28 05:23:33,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-28 05:23:33,043 INFO L175 Difference]: Start difference. First operand has 110 places, 150 transitions, 1085 flow. Second operand 5 states and 190 transitions. [2024-11-28 05:23:33,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 238 transitions, 2179 flow [2024-11-28 05:23:33,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 238 transitions, 1785 flow, removed 114 selfloop flow, removed 9 redundant places. [2024-11-28 05:23:33,062 INFO L231 Difference]: Finished difference. Result has 107 places, 164 transitions, 1025 flow [2024-11-28 05:23:33,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1025, PETRI_PLACES=107, PETRI_TRANSITIONS=164} [2024-11-28 05:23:33,065 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-11-28 05:23:33,066 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 164 transitions, 1025 flow [2024-11-28 05:23:33,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:33,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:33,066 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:33,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:23:33,067 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:33,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1829054364, now seen corresponding path program 1 times [2024-11-28 05:23:33,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:33,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455501199] [2024-11-28 05:23:33,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:33,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 05:23:33,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455501199] [2024-11-28 05:23:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455501199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:33,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:23:33,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173037247] [2024-11-28 05:23:33,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:33,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:23:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:33,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:23:33,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:23:33,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 05:23:33,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 164 transitions, 1025 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:33,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:33,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 05:23:33,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:34,706 INFO L124 PetriNetUnfolderBase]: 8436/13119 cut-off events. [2024-11-28 05:23:34,707 INFO L125 PetriNetUnfolderBase]: For 5839/6405 co-relation queries the response was YES. [2024-11-28 05:23:34,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31514 conditions, 13119 events. 8436/13119 cut-off events. For 5839/6405 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 83734 event pairs, 3460 based on Foata normal form. 68/13135 useless extension candidates. Maximal degree in co-relation 31258. Up to 5601 conditions per place. [2024-11-28 05:23:34,838 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 204 selfloop transitions, 19 changer transitions 3/242 dead transitions. [2024-11-28 05:23:34,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 242 transitions, 1815 flow [2024-11-28 05:23:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:23:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:23:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-11-28 05:23:34,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6263440860215054 [2024-11-28 05:23:34,847 INFO L175 Difference]: Start difference. First operand has 107 places, 164 transitions, 1025 flow. Second operand 6 states and 233 transitions. [2024-11-28 05:23:34,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 242 transitions, 1815 flow [2024-11-28 05:23:34,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 242 transitions, 1810 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:23:34,885 INFO L231 Difference]: Finished difference. Result has 111 places, 164 transitions, 1063 flow [2024-11-28 05:23:34,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1063, PETRI_PLACES=111, PETRI_TRANSITIONS=164} [2024-11-28 05:23:34,887 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2024-11-28 05:23:34,888 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 164 transitions, 1063 flow [2024-11-28 05:23:34,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:23:34,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:34,888 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:34,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:23:34,889 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:34,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 455051683, now seen corresponding path program 1 times [2024-11-28 05:23:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356689221] [2024-11-28 05:23:34,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:23:35,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:35,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356689221] [2024-11-28 05:23:35,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356689221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:35,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:35,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:23:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602729375] [2024-11-28 05:23:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:35,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:23:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:35,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:23:35,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:23:35,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 05:23:35,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 164 transitions, 1063 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2024-11-28 05:23:35,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:35,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 05:23:35,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:36,758 INFO L124 PetriNetUnfolderBase]: 10833/17450 cut-off events. [2024-11-28 05:23:36,758 INFO L125 PetriNetUnfolderBase]: For 8834/9171 co-relation queries the response was YES. [2024-11-28 05:23:36,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41938 conditions, 17450 events. 10833/17450 cut-off events. For 8834/9171 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 122070 event pairs, 5144 based on Foata normal form. 267/17668 useless extension candidates. Maximal degree in co-relation 41680. Up to 6143 conditions per place. [2024-11-28 05:23:36,854 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 169 selfloop transitions, 29 changer transitions 1/215 dead transitions. [2024-11-28 05:23:36,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 215 transitions, 1631 flow [2024-11-28 05:23:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:23:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:23:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-11-28 05:23:36,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-28 05:23:36,856 INFO L175 Difference]: Start difference. First operand has 111 places, 164 transitions, 1063 flow. Second operand 5 states and 205 transitions. [2024-11-28 05:23:36,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 215 transitions, 1631 flow [2024-11-28 05:23:36,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 215 transitions, 1592 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:23:36,882 INFO L231 Difference]: Finished difference. Result has 112 places, 163 transitions, 1080 flow [2024-11-28 05:23:36,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1080, PETRI_PLACES=112, PETRI_TRANSITIONS=163} [2024-11-28 05:23:36,883 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2024-11-28 05:23:36,883 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 163 transitions, 1080 flow [2024-11-28 05:23:36,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2024-11-28 05:23:36,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:36,883 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:36,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:23:36,884 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:36,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:36,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2143781691, now seen corresponding path program 1 times [2024-11-28 05:23:36,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:36,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556249873] [2024-11-28 05:23:36,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:36,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:23:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:37,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556249873] [2024-11-28 05:23:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556249873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:23:37,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:23:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:23:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208623657] [2024-11-28 05:23:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:23:37,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:23:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:37,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:23:37,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:23:37,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 05:23:37,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 163 transitions, 1080 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2024-11-28 05:23:37,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:37,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 05:23:37,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:38,511 INFO L124 PetriNetUnfolderBase]: 9088/14694 cut-off events. [2024-11-28 05:23:38,511 INFO L125 PetriNetUnfolderBase]: For 8589/8921 co-relation queries the response was YES. [2024-11-28 05:23:38,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35997 conditions, 14694 events. 9088/14694 cut-off events. For 8589/8921 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 100680 event pairs, 4030 based on Foata normal form. 90/14753 useless extension candidates. Maximal degree in co-relation 35737. Up to 6584 conditions per place. [2024-11-28 05:23:38,607 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 156 selfloop transitions, 28 changer transitions 6/206 dead transitions. [2024-11-28 05:23:38,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 206 transitions, 1600 flow [2024-11-28 05:23:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:23:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:23:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-11-28 05:23:38,609 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6419354838709678 [2024-11-28 05:23:38,609 INFO L175 Difference]: Start difference. First operand has 112 places, 163 transitions, 1080 flow. Second operand 5 states and 199 transitions. [2024-11-28 05:23:38,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 206 transitions, 1600 flow [2024-11-28 05:23:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 206 transitions, 1569 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:23:38,640 INFO L231 Difference]: Finished difference. Result has 115 places, 162 transitions, 1095 flow [2024-11-28 05:23:38,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1095, PETRI_PLACES=115, PETRI_TRANSITIONS=162} [2024-11-28 05:23:38,642 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 57 predicate places. [2024-11-28 05:23:38,642 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 162 transitions, 1095 flow [2024-11-28 05:23:38,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2024-11-28 05:23:38,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:38,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:38,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:23:38,643 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:38,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash -481516863, now seen corresponding path program 1 times [2024-11-28 05:23:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811122287] [2024-11-28 05:23:38,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:23:38,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:38,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811122287] [2024-11-28 05:23:38,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811122287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:38,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118517642] [2024-11-28 05:23:38,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:38,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:38,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:38,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:38,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:23:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:38,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:23:38,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:23:39,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:23:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118517642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:39,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-28 05:23:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787534794] [2024-11-28 05:23:39,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:39,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:23:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:39,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:23:39,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:23:39,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 05:23:39,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 162 transitions, 1095 flow. Second operand has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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) [2024-11-28 05:23:39,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:39,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 05:23:39,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:45,521 INFO L124 PetriNetUnfolderBase]: 28475/44128 cut-off events. [2024-11-28 05:23:45,521 INFO L125 PetriNetUnfolderBase]: For 30772/32218 co-relation queries the response was YES. [2024-11-28 05:23:45,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110598 conditions, 44128 events. 28475/44128 cut-off events. For 30772/32218 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 338420 event pairs, 10971 based on Foata normal form. 744/44604 useless extension candidates. Maximal degree in co-relation 110116. Up to 6421 conditions per place. [2024-11-28 05:23:45,793 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 552 selfloop transitions, 226 changer transitions 41/832 dead transitions. [2024-11-28 05:23:45,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 832 transitions, 6210 flow [2024-11-28 05:23:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 05:23:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-28 05:23:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1180 transitions. [2024-11-28 05:23:45,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40494166094715167 [2024-11-28 05:23:45,799 INFO L175 Difference]: Start difference. First operand has 115 places, 162 transitions, 1095 flow. Second operand 47 states and 1180 transitions. [2024-11-28 05:23:45,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 832 transitions, 6210 flow [2024-11-28 05:23:45,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 832 transitions, 6094 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:23:45,904 INFO L231 Difference]: Finished difference. Result has 170 places, 370 transitions, 3279 flow [2024-11-28 05:23:45,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3279, PETRI_PLACES=170, PETRI_TRANSITIONS=370} [2024-11-28 05:23:45,904 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 112 predicate places. [2024-11-28 05:23:45,905 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 370 transitions, 3279 flow [2024-11-28 05:23:45,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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) [2024-11-28 05:23:45,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:45,905 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:45,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:23:46,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:23:46,106 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:46,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -13849394, now seen corresponding path program 1 times [2024-11-28 05:23:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575168062] [2024-11-28 05:23:46,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:23:46,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:46,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575168062] [2024-11-28 05:23:46,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575168062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:46,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21250449] [2024-11-28 05:23:46,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:46,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:46,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:46,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:46,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:23:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:46,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:23:46,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:23:46,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:23:46,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21250449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:46,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:46,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-28 05:23:46,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014489553] [2024-11-28 05:23:46,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:46,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:23:46,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:46,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:23:46,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:23:46,933 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 05:23:46,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 370 transitions, 3279 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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) [2024-11-28 05:23:46,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:46,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 05:23:46,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:52,265 INFO L124 PetriNetUnfolderBase]: 25283/38712 cut-off events. [2024-11-28 05:23:52,265 INFO L125 PetriNetUnfolderBase]: For 46193/47091 co-relation queries the response was YES. [2024-11-28 05:23:52,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102364 conditions, 38712 events. 25283/38712 cut-off events. For 46193/47091 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 286274 event pairs, 8714 based on Foata normal form. 882/39093 useless extension candidates. Maximal degree in co-relation 101803. Up to 8500 conditions per place. [2024-11-28 05:23:52,512 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 358 selfloop transitions, 168 changer transitions 12/550 dead transitions. [2024-11-28 05:23:52,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 550 transitions, 5139 flow [2024-11-28 05:23:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:23:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:23:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 466 transitions. [2024-11-28 05:23:52,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44212523719165087 [2024-11-28 05:23:52,514 INFO L175 Difference]: Start difference. First operand has 170 places, 370 transitions, 3279 flow. Second operand 17 states and 466 transitions. [2024-11-28 05:23:52,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 550 transitions, 5139 flow [2024-11-28 05:23:52,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 550 transitions, 5082 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-28 05:23:52,596 INFO L231 Difference]: Finished difference. Result has 182 places, 371 transitions, 3570 flow [2024-11-28 05:23:52,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3570, PETRI_PLACES=182, PETRI_TRANSITIONS=371} [2024-11-28 05:23:52,597 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 124 predicate places. [2024-11-28 05:23:52,597 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 371 transitions, 3570 flow [2024-11-28 05:23:52,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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) [2024-11-28 05:23:52,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:52,597 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:52,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:23:52,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:23:52,798 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:52,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1869906990, now seen corresponding path program 1 times [2024-11-28 05:23:52,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:52,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715973861] [2024-11-28 05:23:52,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:23:52,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:52,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715973861] [2024-11-28 05:23:52,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715973861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:52,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202591328] [2024-11-28 05:23:52,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:52,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:52,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:52,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:52,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:23:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:53,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:23:53,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:23:53,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:23:53,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202591328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:53,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:53,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-28 05:23:53,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044608174] [2024-11-28 05:23:53,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:53,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:23:53,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:53,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:23:53,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:23:53,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 05:23:53,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 371 transitions, 3570 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 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) [2024-11-28 05:23:53,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:53,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 05:23:53,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:23:58,123 INFO L124 PetriNetUnfolderBase]: 22624/34527 cut-off events. [2024-11-28 05:23:58,123 INFO L125 PetriNetUnfolderBase]: For 53312/53680 co-relation queries the response was YES. [2024-11-28 05:23:58,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95121 conditions, 34527 events. 22624/34527 cut-off events. For 53312/53680 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 248615 event pairs, 8754 based on Foata normal form. 748/34867 useless extension candidates. Maximal degree in co-relation 94531. Up to 7783 conditions per place. [2024-11-28 05:23:58,354 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 406 selfloop transitions, 141 changer transitions 32/590 dead transitions. [2024-11-28 05:23:58,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 590 transitions, 6014 flow [2024-11-28 05:23:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:23:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:23:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 473 transitions. [2024-11-28 05:23:58,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4487666034155598 [2024-11-28 05:23:58,356 INFO L175 Difference]: Start difference. First operand has 182 places, 371 transitions, 3570 flow. Second operand 17 states and 473 transitions. [2024-11-28 05:23:58,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 590 transitions, 6014 flow [2024-11-28 05:23:58,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 590 transitions, 5859 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-28 05:23:58,473 INFO L231 Difference]: Finished difference. Result has 189 places, 370 transitions, 3774 flow [2024-11-28 05:23:58,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3774, PETRI_PLACES=189, PETRI_TRANSITIONS=370} [2024-11-28 05:23:58,474 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 131 predicate places. [2024-11-28 05:23:58,474 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 370 transitions, 3774 flow [2024-11-28 05:23:58,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 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) [2024-11-28 05:23:58,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:23:58,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:58,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 05:23:58,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:23:58,675 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:23:58,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:58,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2100497152, now seen corresponding path program 1 times [2024-11-28 05:23:58,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:58,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603972874] [2024-11-28 05:23:58,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:58,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:23:58,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603972874] [2024-11-28 05:23:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603972874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691709321] [2024-11-28 05:23:58,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:58,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:58,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:58,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:58,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:23:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:58,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:23:58,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 05:23:59,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 05:23:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691709321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:59,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:59,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-28 05:23:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424526122] [2024-11-28 05:23:59,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:59,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:23:59,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:59,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:23:59,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:23:59,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 05:23:59,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 370 transitions, 3774 flow. Second operand has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 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) [2024-11-28 05:23:59,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:23:59,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 05:23:59,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:24:07,909 INFO L124 PetriNetUnfolderBase]: 42579/64420 cut-off events. [2024-11-28 05:24:07,909 INFO L125 PetriNetUnfolderBase]: For 108642/109378 co-relation queries the response was YES. [2024-11-28 05:24:08,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179829 conditions, 64420 events. 42579/64420 cut-off events. For 108642/109378 co-relation queries the response was YES. Maximal size of possible extension queue 1820. Compared 490845 event pairs, 13463 based on Foata normal form. 854/65204 useless extension candidates. Maximal degree in co-relation 179221. Up to 12297 conditions per place. [2024-11-28 05:24:08,335 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 270 selfloop transitions, 296 changer transitions 20/597 dead transitions. [2024-11-28 05:24:08,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 597 transitions, 6050 flow [2024-11-28 05:24:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:24:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:24:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-11-28 05:24:08,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2024-11-28 05:24:08,336 INFO L175 Difference]: Start difference. First operand has 189 places, 370 transitions, 3774 flow. Second operand 14 states and 428 transitions. [2024-11-28 05:24:08,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 597 transitions, 6050 flow [2024-11-28 05:24:08,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 597 transitions, 5800 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-28 05:24:08,577 INFO L231 Difference]: Finished difference. Result has 192 places, 375 transitions, 4238 flow [2024-11-28 05:24:08,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4238, PETRI_PLACES=192, PETRI_TRANSITIONS=375} [2024-11-28 05:24:08,578 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 134 predicate places. [2024-11-28 05:24:08,578 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 375 transitions, 4238 flow [2024-11-28 05:24:08,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 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) [2024-11-28 05:24:08,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:24:08,578 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:08,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:24:08,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:08,779 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:24:08,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2009012439, now seen corresponding path program 2 times [2024-11-28 05:24:08,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:08,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695011264] [2024-11-28 05:24:08,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:24:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:08,798 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:24:08,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:24:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 05:24:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:08,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695011264] [2024-11-28 05:24:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695011264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:08,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216973027] [2024-11-28 05:24:08,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:24:08,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:08,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:08,854 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:08,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4128698-2078-4801-9b94-da737c0d9a35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:24:08,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:24:08,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:24:08,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:24:08,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 05:24:09,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 05:24:09,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216973027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:09,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 05:24:09,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928997945] [2024-11-28 05:24:09,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:09,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:24:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:09,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:24:09,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:24:09,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 05:24:09,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 375 transitions, 4238 flow. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:09,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:24:09,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 05:24:09,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand