./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX --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 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:08:58,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:08:58,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:08:58,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:08:58,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:08:58,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:08:58,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:08:58,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:08:58,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:08:58,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:08:58,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:08:58,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:08:58,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:08:58,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:08:58,493 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:08:58,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:08:58,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:08:58,499 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:08:58,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:08:58,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:08:58,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:08:58,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:08:58,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:08:58,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:08:58,505 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:08:58,506 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:08:58,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:08:58,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:08:58,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:08:58,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:08:58,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:08:58,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:08:58,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:08:58,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:08:58,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:08:58,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:08:58,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:08:58,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:08:58,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:08:58,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:08:58,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:08:58,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:08:58,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:08:58,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:08:58,517 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2024-11-08 16:08:58,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:08:59,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:08:59,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:08:59,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:08:59,029 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:08:59,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c Unable to find full path for "g++" [2024-11-08 16:09:02,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:09:02,376 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:09:02,378 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-08 16:09:02,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/data/a54c213b4/c1165560460a4796ae9226671d0d0b63/FLAG21ae76912 [2024-11-08 16:09:02,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/data/a54c213b4/c1165560460a4796ae9226671d0d0b63 [2024-11-08 16:09:02,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:09:02,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:09:02,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:02,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:09:02,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:09:02,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:02" (1/1) ... [2024-11-08 16:09:02,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6346b372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:02, skipping insertion in model container [2024-11-08 16:09:02,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:02" (1/1) ... [2024-11-08 16:09:02,491 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:09:02,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:02,941 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:09:03,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:03,041 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:09:03,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03 WrapperNode [2024-11-08 16:09:03,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:03,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:03,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:09:03,045 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:09:03,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,130 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 167 [2024-11-08 16:09:03,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:03,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:09:03,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:09:03,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:09:03,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,194 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 16:09:03,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:09:03,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:09:03,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:09:03,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:09:03,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (1/1) ... [2024-11-08 16:09:03,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:03,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:03,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:09:03,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:09:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:09:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:09:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:09:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:09:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:09:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:09:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:09:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:09:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:09:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:09:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:09:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:09:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:09:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:09:03,331 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:09:03,495 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:09:03,498 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:09:04,104 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:09:04,104 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:09:04,610 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:09:04,614 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:09:04,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:04 BoogieIcfgContainer [2024-11-08 16:09:04,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:09:04,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:09:04,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:09:04,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:09:04,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:09:02" (1/3) ... [2024-11-08 16:09:04,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f13f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:04, skipping insertion in model container [2024-11-08 16:09:04,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:03" (2/3) ... [2024-11-08 16:09:04,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f13f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:04, skipping insertion in model container [2024-11-08 16:09:04,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:04" (3/3) ... [2024-11-08 16:09:04,641 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-11-08 16:09:04,676 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:09:04,677 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-08 16:09:04,677 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:09:04,825 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:09:04,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 172 flow [2024-11-08 16:09:04,958 INFO L124 PetriNetUnfolderBase]: 10/77 cut-off events. [2024-11-08 16:09:04,959 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:09:04,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 10/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-08 16:09:04,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 79 transitions, 172 flow [2024-11-08 16:09:04,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 75 transitions, 159 flow [2024-11-08 16:09:04,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:05,001 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;@a6e7c81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:05,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-08 16:09:05,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:09:05,009 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 16:09:05,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:05,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:05,011 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:09:05,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:05,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:05,022 INFO L85 PathProgramCache]: Analyzing trace with hash 16196704, now seen corresponding path program 1 times [2024-11-08 16:09:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:05,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158149849] [2024-11-08 16:09:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:05,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:05,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158149849] [2024-11-08 16:09:05,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158149849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:05,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:05,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:05,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142111695] [2024-11-08 16:09:05,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:05,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:05,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:05,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:05,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2024-11-08 16:09:05,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-08 16:09:05,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:05,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2024-11-08 16:09:05,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:06,272 INFO L124 PetriNetUnfolderBase]: 369/986 cut-off events. [2024-11-08 16:09:06,273 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-08 16:09:06,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 986 events. 369/986 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6459 event pairs, 226 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 1472. Up to 537 conditions per place. [2024-11-08 16:09:06,292 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 30 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-08 16:09:06,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 78 transitions, 233 flow [2024-11-08 16:09:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-08 16:09:06,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6962025316455697 [2024-11-08 16:09:06,318 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 159 flow. Second operand 4 states and 220 transitions. [2024-11-08 16:09:06,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 78 transitions, 233 flow [2024-11-08 16:09:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 78 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:09:06,335 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 183 flow [2024-11-08 16:09:06,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-11-08 16:09:06,348 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2024-11-08 16:09:06,349 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 183 flow [2024-11-08 16:09:06,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-08 16:09:06,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:06,351 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 16:09:06,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:09:06,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:06,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1359335464, now seen corresponding path program 1 times [2024-11-08 16:09:06,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:06,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948917260] [2024-11-08 16:09:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:06,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948917260] [2024-11-08 16:09:06,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948917260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:06,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572725147] [2024-11-08 16:09:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:06,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:06,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:06,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:06,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:09:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:06,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:09:06,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:07,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:09:07,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572725147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:07,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:09:07,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 16:09:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653479806] [2024-11-08 16:09:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:07,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:09:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:09:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:09:07,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2024-11-08 16:09:07,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 states have internal predecessors, (281), 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) [2024-11-08 16:09:07,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:07,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2024-11-08 16:09:07,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:07,733 INFO L124 PetriNetUnfolderBase]: 369/985 cut-off events. [2024-11-08 16:09:07,733 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-08 16:09:07,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 985 events. 369/985 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6485 event pairs, 226 based on Foata normal form. 1/810 useless extension candidates. Maximal degree in co-relation 1525. Up to 532 conditions per place. [2024-11-08 16:09:07,753 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 26 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-11-08 16:09:07,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 245 flow [2024-11-08 16:09:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-11-08 16:09:07,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6540084388185654 [2024-11-08 16:09:07,766 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 183 flow. Second operand 6 states and 310 transitions. [2024-11-08 16:09:07,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 245 flow [2024-11-08 16:09:07,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:09:07,773 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 190 flow [2024-11-08 16:09:07,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-11-08 16:09:07,775 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-11-08 16:09:07,775 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 190 flow [2024-11-08 16:09:07,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 states have internal predecessors, (281), 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) [2024-11-08 16:09:07,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:07,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:07,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:09:07,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:07,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:07,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1505389334, now seen corresponding path program 1 times [2024-11-08 16:09:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:07,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490268052] [2024-11-08 16:09:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490268052] [2024-11-08 16:09:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490268052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:08,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:08,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234209752] [2024-11-08 16:09:08,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:08,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:08,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2024-11-08 16:09:08,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-11-08 16:09:08,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:08,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2024-11-08 16:09:08,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:08,790 INFO L124 PetriNetUnfolderBase]: 649/1527 cut-off events. [2024-11-08 16:09:08,790 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-08 16:09:08,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 1527 events. 649/1527 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10600 event pairs, 208 based on Foata normal form. 44/1313 useless extension candidates. Maximal degree in co-relation 2526. Up to 501 conditions per place. [2024-11-08 16:09:08,812 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 62 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-08 16:09:08,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 386 flow [2024-11-08 16:09:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-11-08 16:09:08,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7436708860759493 [2024-11-08 16:09:08,816 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 190 flow. Second operand 4 states and 235 transitions. [2024-11-08 16:09:08,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 386 flow [2024-11-08 16:09:08,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 371 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-08 16:09:08,826 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 209 flow [2024-11-08 16:09:08,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-11-08 16:09:08,828 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2024-11-08 16:09:08,830 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 209 flow [2024-11-08 16:09:08,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-11-08 16:09:08,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:08,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 16:09:08,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:09:08,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:08,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash 810274078, now seen corresponding path program 1 times [2024-11-08 16:09:08,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757242471] [2024-11-08 16:09:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:09,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757242471] [2024-11-08 16:09:09,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757242471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:09,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476049426] [2024-11-08 16:09:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:09,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:09,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:09,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:09,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:09:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:09,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:09:09,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:09,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:09,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476049426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:09,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:09,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 16:09:09,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809873846] [2024-11-08 16:09:09,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:09,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:09:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:09:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:09:09,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2024-11-08 16:09:09,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 209 flow. Second operand has 12 states, 12 states have (on average 47.083333333333336) internal successors, (565), 12 states have internal predecessors, (565), 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) [2024-11-08 16:09:09,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:09,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2024-11-08 16:09:09,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:10,187 INFO L124 PetriNetUnfolderBase]: 451/1250 cut-off events. [2024-11-08 16:09:10,188 INFO L125 PetriNetUnfolderBase]: For 264/292 co-relation queries the response was YES. [2024-11-08 16:09:10,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1250 events. 451/1250 cut-off events. For 264/292 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8952 event pairs, 284 based on Foata normal form. 18/1048 useless extension candidates. Maximal degree in co-relation 2091. Up to 659 conditions per place. [2024-11-08 16:09:10,208 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 31 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2024-11-08 16:09:10,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 88 transitions, 336 flow [2024-11-08 16:09:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:09:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:09:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 505 transitions. [2024-11-08 16:09:10,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392405063291139 [2024-11-08 16:09:10,213 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 209 flow. Second operand 10 states and 505 transitions. [2024-11-08 16:09:10,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 88 transitions, 336 flow [2024-11-08 16:09:10,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:09:10,222 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 292 flow [2024-11-08 16:09:10,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-11-08 16:09:10,226 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2024-11-08 16:09:10,229 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 292 flow [2024-11-08 16:09:10,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.083333333333336) internal successors, (565), 12 states have internal predecessors, (565), 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) [2024-11-08 16:09:10,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:10,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:10,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:09:10,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:10,436 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:10,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash -577570318, now seen corresponding path program 1 times [2024-11-08 16:09:10,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321086231] [2024-11-08 16:09:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:10,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:10,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:10,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321086231] [2024-11-08 16:09:10,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321086231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:10,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:10,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:09:10,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168887815] [2024-11-08 16:09:10,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:10,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:10,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:10,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2024-11-08 16:09:10,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2024-11-08 16:09:10,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:10,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2024-11-08 16:09:10,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:11,275 INFO L124 PetriNetUnfolderBase]: 615/1618 cut-off events. [2024-11-08 16:09:11,275 INFO L125 PetriNetUnfolderBase]: For 325/333 co-relation queries the response was YES. [2024-11-08 16:09:11,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2927 conditions, 1618 events. 615/1618 cut-off events. For 325/333 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11451 event pairs, 362 based on Foata normal form. 26/1446 useless extension candidates. Maximal degree in co-relation 2883. Up to 769 conditions per place. [2024-11-08 16:09:11,306 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 69 selfloop transitions, 7 changer transitions 2/120 dead transitions. [2024-11-08 16:09:11,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 518 flow [2024-11-08 16:09:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 338 transitions. [2024-11-08 16:09:11,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7130801687763713 [2024-11-08 16:09:11,310 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 292 flow. Second operand 6 states and 338 transitions. [2024-11-08 16:09:11,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 518 flow [2024-11-08 16:09:11,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 507 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 16:09:11,321 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 322 flow [2024-11-08 16:09:11,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-08 16:09:11,324 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 24 predicate places. [2024-11-08 16:09:11,325 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 322 flow [2024-11-08 16:09:11,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2024-11-08 16:09:11,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:11,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:11,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:09:11,327 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:11,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1647827148, now seen corresponding path program 1 times [2024-11-08 16:09:11,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:11,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754862267] [2024-11-08 16:09:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:11,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:11,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754862267] [2024-11-08 16:09:11,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754862267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:11,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:11,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833686915] [2024-11-08 16:09:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:11,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:11,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2024-11-08 16:09:11,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-11-08 16:09:11,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:11,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2024-11-08 16:09:11,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:12,018 INFO L124 PetriNetUnfolderBase]: 975/2319 cut-off events. [2024-11-08 16:09:12,019 INFO L125 PetriNetUnfolderBase]: For 790/842 co-relation queries the response was YES. [2024-11-08 16:09:12,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 2319 events. 975/2319 cut-off events. For 790/842 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 17014 event pairs, 348 based on Foata normal form. 82/2098 useless extension candidates. Maximal degree in co-relation 4510. Up to 811 conditions per place. [2024-11-08 16:09:12,048 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 81 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2024-11-08 16:09:12,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 127 transitions, 626 flow [2024-11-08 16:09:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-08 16:09:12,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7373417721518988 [2024-11-08 16:09:12,051 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 322 flow. Second operand 4 states and 233 transitions. [2024-11-08 16:09:12,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 127 transitions, 626 flow [2024-11-08 16:09:12,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 127 transitions, 624 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:09:12,060 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 354 flow [2024-11-08 16:09:12,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-11-08 16:09:12,062 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 28 predicate places. [2024-11-08 16:09:12,062 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 354 flow [2024-11-08 16:09:12,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-11-08 16:09:12,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:12,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:12,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:09:12,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:12,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash -456965350, now seen corresponding path program 1 times [2024-11-08 16:09:12,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:12,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749543973] [2024-11-08 16:09:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:12,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:12,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749543973] [2024-11-08 16:09:12,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749543973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:12,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:09:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009081938] [2024-11-08 16:09:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:12,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:12,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:12,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:12,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2024-11-08 16:09:12,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 354 flow. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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) [2024-11-08 16:09:12,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:12,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2024-11-08 16:09:12,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:12,749 INFO L124 PetriNetUnfolderBase]: 650/1724 cut-off events. [2024-11-08 16:09:12,749 INFO L125 PetriNetUnfolderBase]: For 746/820 co-relation queries the response was YES. [2024-11-08 16:09:12,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 1724 events. 650/1724 cut-off events. For 746/820 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12822 event pairs, 434 based on Foata normal form. 35/1568 useless extension candidates. Maximal degree in co-relation 3451. Up to 924 conditions per place. [2024-11-08 16:09:12,774 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 45 selfloop transitions, 2 changer transitions 16/105 dead transitions. [2024-11-08 16:09:12,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 105 transitions, 515 flow [2024-11-08 16:09:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2024-11-08 16:09:12,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6772151898734177 [2024-11-08 16:09:12,778 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 354 flow. Second operand 6 states and 321 transitions. [2024-11-08 16:09:12,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 105 transitions, 515 flow [2024-11-08 16:09:12,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 515 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:09:12,788 INFO L231 Difference]: Finished difference. Result has 107 places, 89 transitions, 335 flow [2024-11-08 16:09:12,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=107, PETRI_TRANSITIONS=89} [2024-11-08 16:09:12,789 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2024-11-08 16:09:12,790 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 335 flow [2024-11-08 16:09:12,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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) [2024-11-08 16:09:12,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:12,791 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:12,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:09:12,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:12,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1842187114, now seen corresponding path program 1 times [2024-11-08 16:09:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041307116] [2024-11-08 16:09:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:13,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:13,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041307116] [2024-11-08 16:09:13,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041307116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:13,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48854154] [2024-11-08 16:09:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:13,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:13,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:13,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:13,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:09:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:13,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:09:13,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:13,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:09:13,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 16:09:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:13,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:13,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 16:09:13,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 16:09:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48854154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:13,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:13,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:09:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551936773] [2024-11-08 16:09:13,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:13,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:09:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:13,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:09:13,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:09:14,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2024-11-08 16:09:14,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 335 flow. Second operand has 13 states, 13 states have (on average 46.38461538461539) internal successors, (603), 13 states have internal predecessors, (603), 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) [2024-11-08 16:09:14,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:14,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2024-11-08 16:09:14,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:15,261 INFO L124 PetriNetUnfolderBase]: 1257/3218 cut-off events. [2024-11-08 16:09:15,261 INFO L125 PetriNetUnfolderBase]: For 1513/1647 co-relation queries the response was YES. [2024-11-08 16:09:15,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6637 conditions, 3218 events. 1257/3218 cut-off events. For 1513/1647 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25110 event pairs, 294 based on Foata normal form. 52/2922 useless extension candidates. Maximal degree in co-relation 6601. Up to 677 conditions per place. [2024-11-08 16:09:15,309 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 103 selfloop transitions, 18 changer transitions 0/164 dead transitions. [2024-11-08 16:09:15,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 164 transitions, 847 flow [2024-11-08 16:09:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:09:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:09:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 551 transitions. [2024-11-08 16:09:15,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6974683544303798 [2024-11-08 16:09:15,313 INFO L175 Difference]: Start difference. First operand has 107 places, 89 transitions, 335 flow. Second operand 10 states and 551 transitions. [2024-11-08 16:09:15,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 164 transitions, 847 flow [2024-11-08 16:09:15,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 164 transitions, 811 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-08 16:09:15,331 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 424 flow [2024-11-08 16:09:15,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2024-11-08 16:09:15,332 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 34 predicate places. [2024-11-08 16:09:15,332 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 424 flow [2024-11-08 16:09:15,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 46.38461538461539) internal successors, (603), 13 states have internal predecessors, (603), 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) [2024-11-08 16:09:15,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:15,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:15,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:09:15,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:15,541 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:15,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1273194498, now seen corresponding path program 1 times [2024-11-08 16:09:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:15,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176470580] [2024-11-08 16:09:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176470580] [2024-11-08 16:09:15,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176470580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:15,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178074480] [2024-11-08 16:09:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:15,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:15,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:09:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:16,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:09:16,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:16,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:09:16,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 16:09:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:16,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:16,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 16:09:16,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:09:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:16,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178074480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:16,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:16,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:09:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668675671] [2024-11-08 16:09:16,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:16,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:09:16,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:09:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:09:16,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2024-11-08 16:09:16,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 44.53846153846154) internal successors, (579), 13 states have internal predecessors, (579), 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) [2024-11-08 16:09:16,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:16,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2024-11-08 16:09:16,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:17,972 INFO L124 PetriNetUnfolderBase]: 1481/3482 cut-off events. [2024-11-08 16:09:17,973 INFO L125 PetriNetUnfolderBase]: For 2930/3028 co-relation queries the response was YES. [2024-11-08 16:09:17,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 3482 events. 1481/3482 cut-off events. For 2930/3028 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 26201 event pairs, 369 based on Foata normal form. 94/3206 useless extension candidates. Maximal degree in co-relation 7878. Up to 869 conditions per place. [2024-11-08 16:09:18,027 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 107 selfloop transitions, 18 changer transitions 0/165 dead transitions. [2024-11-08 16:09:18,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 165 transitions, 896 flow [2024-11-08 16:09:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:09:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:09:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 531 transitions. [2024-11-08 16:09:18,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6721518987341772 [2024-11-08 16:09:18,033 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 424 flow. Second operand 10 states and 531 transitions. [2024-11-08 16:09:18,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 165 transitions, 896 flow [2024-11-08 16:09:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 165 transitions, 884 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 16:09:18,048 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 474 flow [2024-11-08 16:09:18,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=474, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-11-08 16:09:18,052 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 41 predicate places. [2024-11-08 16:09:18,053 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 474 flow [2024-11-08 16:09:18,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.53846153846154) internal successors, (579), 13 states have internal predecessors, (579), 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) [2024-11-08 16:09:18,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:18,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:18,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:09:18,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 16:09:18,259 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:18,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1352619666, now seen corresponding path program 1 times [2024-11-08 16:09:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975771138] [2024-11-08 16:09:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:18,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:18,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:18,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975771138] [2024-11-08 16:09:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975771138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:18,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013086746] [2024-11-08 16:09:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:18,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:18,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:18,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:18,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:09:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:18,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:09:18,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:18,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:09:19,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 16:09:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:19,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:19,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 16:09:19,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:09:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013086746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:19,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:09:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092135133] [2024-11-08 16:09:19,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:19,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:09:19,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:09:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:09:19,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2024-11-08 16:09:19,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 474 flow. Second operand has 13 states, 13 states have (on average 46.69230769230769) internal successors, (607), 13 states have internal predecessors, (607), 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) [2024-11-08 16:09:19,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:19,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2024-11-08 16:09:19,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:21,590 INFO L124 PetriNetUnfolderBase]: 2434/6165 cut-off events. [2024-11-08 16:09:21,591 INFO L125 PetriNetUnfolderBase]: For 7363/7613 co-relation queries the response was YES. [2024-11-08 16:09:21,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14072 conditions, 6165 events. 2434/6165 cut-off events. For 7363/7613 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 52670 event pairs, 608 based on Foata normal form. 156/5520 useless extension candidates. Maximal degree in co-relation 14025. Up to 1387 conditions per place. [2024-11-08 16:09:21,677 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 139 selfloop transitions, 18 changer transitions 0/203 dead transitions. [2024-11-08 16:09:21,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 203 transitions, 1408 flow [2024-11-08 16:09:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:09:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:09:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 547 transitions. [2024-11-08 16:09:21,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6924050632911393 [2024-11-08 16:09:21,681 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 474 flow. Second operand 10 states and 547 transitions. [2024-11-08 16:09:21,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 203 transitions, 1408 flow [2024-11-08 16:09:21,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 203 transitions, 1336 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-08 16:09:21,718 INFO L231 Difference]: Finished difference. Result has 118 places, 109 transitions, 557 flow [2024-11-08 16:09:21,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=557, PETRI_PLACES=118, PETRI_TRANSITIONS=109} [2024-11-08 16:09:21,719 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 46 predicate places. [2024-11-08 16:09:21,719 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 109 transitions, 557 flow [2024-11-08 16:09:21,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 46.69230769230769) internal successors, (607), 13 states have internal predecessors, (607), 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) [2024-11-08 16:09:21,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:21,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:21,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:09:21,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:09:21,927 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:21,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 814324365, now seen corresponding path program 1 times [2024-11-08 16:09:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:21,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109830498] [2024-11-08 16:09:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:21,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:22,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109830498] [2024-11-08 16:09:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109830498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446305593] [2024-11-08 16:09:22,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:22,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:22,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2024-11-08 16:09:22,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 109 transitions, 557 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:22,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:22,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2024-11-08 16:09:22,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:23,463 INFO L124 PetriNetUnfolderBase]: 2738/6720 cut-off events. [2024-11-08 16:09:23,463 INFO L125 PetriNetUnfolderBase]: For 9805/10053 co-relation queries the response was YES. [2024-11-08 16:09:23,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16997 conditions, 6720 events. 2738/6720 cut-off events. For 9805/10053 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 57179 event pairs, 1052 based on Foata normal form. 216/6139 useless extension candidates. Maximal degree in co-relation 16948. Up to 2275 conditions per place. [2024-11-08 16:09:23,553 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 105 selfloop transitions, 8 changer transitions 0/154 dead transitions. [2024-11-08 16:09:23,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 1024 flow [2024-11-08 16:09:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-08 16:09:23,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7341772151898734 [2024-11-08 16:09:23,556 INFO L175 Difference]: Start difference. First operand has 118 places, 109 transitions, 557 flow. Second operand 4 states and 232 transitions. [2024-11-08 16:09:23,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 1024 flow [2024-11-08 16:09:23,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 154 transitions, 1003 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-08 16:09:23,597 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 539 flow [2024-11-08 16:09:23,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2024-11-08 16:09:23,599 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 44 predicate places. [2024-11-08 16:09:23,599 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 539 flow [2024-11-08 16:09:23,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:23,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:23,600 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:23,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:09:23,601 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:23,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 814323340, now seen corresponding path program 1 times [2024-11-08 16:09:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:23,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642484100] [2024-11-08 16:09:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642484100] [2024-11-08 16:09:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642484100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:23,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:23,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126633459] [2024-11-08 16:09:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:23,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:23,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:23,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2024-11-08 16:09:23,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 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) [2024-11-08 16:09:23,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:23,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2024-11-08 16:09:23,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:26,109 INFO L124 PetriNetUnfolderBase]: 4060/9507 cut-off events. [2024-11-08 16:09:26,109 INFO L125 PetriNetUnfolderBase]: For 12528/12866 co-relation queries the response was YES. [2024-11-08 16:09:26,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23496 conditions, 9507 events. 4060/9507 cut-off events. For 12528/12866 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 83118 event pairs, 922 based on Foata normal form. 186/8835 useless extension candidates. Maximal degree in co-relation 23451. Up to 3933 conditions per place. [2024-11-08 16:09:26,206 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 165 selfloop transitions, 16 changer transitions 0/222 dead transitions. [2024-11-08 16:09:26,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 222 transitions, 1496 flow [2024-11-08 16:09:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:09:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:09:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 420 transitions. [2024-11-08 16:09:26,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.759493670886076 [2024-11-08 16:09:26,209 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 539 flow. Second operand 7 states and 420 transitions. [2024-11-08 16:09:26,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 222 transitions, 1496 flow [2024-11-08 16:09:26,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 222 transitions, 1476 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:09:26,247 INFO L231 Difference]: Finished difference. Result has 125 places, 120 transitions, 662 flow [2024-11-08 16:09:26,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2024-11-08 16:09:26,248 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 53 predicate places. [2024-11-08 16:09:26,249 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 662 flow [2024-11-08 16:09:26,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 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) [2024-11-08 16:09:26,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:26,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:26,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:09:26,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:26,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1018494472, now seen corresponding path program 1 times [2024-11-08 16:09:26,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:26,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699732854] [2024-11-08 16:09:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:26,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699732854] [2024-11-08 16:09:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699732854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295400889] [2024-11-08 16:09:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:26,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:26,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:26,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:09:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:26,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:09:26,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:26,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:09:26,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 16:09:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:26,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:26,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 16:09:26,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 16:09:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295400889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:26,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:26,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:09:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95701135] [2024-11-08 16:09:26,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:26,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:09:26,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:26,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:09:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:09:27,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2024-11-08 16:09:27,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 662 flow. Second operand has 13 states, 13 states have (on average 44.84615384615385) internal successors, (583), 13 states have internal predecessors, (583), 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) [2024-11-08 16:09:27,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:27,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2024-11-08 16:09:27,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:29,202 INFO L124 PetriNetUnfolderBase]: 3425/7977 cut-off events. [2024-11-08 16:09:29,202 INFO L125 PetriNetUnfolderBase]: For 14326/14775 co-relation queries the response was YES. [2024-11-08 16:09:29,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20701 conditions, 7977 events. 3425/7977 cut-off events. For 14326/14775 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 68334 event pairs, 936 based on Foata normal form. 274/7387 useless extension candidates. Maximal degree in co-relation 20650. Up to 2196 conditions per place. [2024-11-08 16:09:29,291 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 153 selfloop transitions, 18 changer transitions 0/221 dead transitions. [2024-11-08 16:09:29,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 221 transitions, 1651 flow [2024-11-08 16:09:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:09:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:09:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 527 transitions. [2024-11-08 16:09:29,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6670886075949367 [2024-11-08 16:09:29,294 INFO L175 Difference]: Start difference. First operand has 125 places, 120 transitions, 662 flow. Second operand 10 states and 527 transitions. [2024-11-08 16:09:29,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 221 transitions, 1651 flow [2024-11-08 16:09:29,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 221 transitions, 1645 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-08 16:09:29,350 INFO L231 Difference]: Finished difference. Result has 136 places, 122 transitions, 722 flow [2024-11-08 16:09:29,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=722, PETRI_PLACES=136, PETRI_TRANSITIONS=122} [2024-11-08 16:09:29,351 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 64 predicate places. [2024-11-08 16:09:29,351 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 122 transitions, 722 flow [2024-11-08 16:09:29,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.84615384615385) internal successors, (583), 13 states have internal predecessors, (583), 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) [2024-11-08 16:09:29,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:29,352 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:29,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:09:29,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:29,557 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:29,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash -525779643, now seen corresponding path program 1 times [2024-11-08 16:09:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:29,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773921644] [2024-11-08 16:09:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:29,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:29,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773921644] [2024-11-08 16:09:29,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773921644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:29,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:09:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660407987] [2024-11-08 16:09:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:29,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:09:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:09:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:09:29,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-11-08 16:09:29,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 122 transitions, 722 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2024-11-08 16:09:29,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:29,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-11-08 16:09:29,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:32,907 INFO L124 PetriNetUnfolderBase]: 5277/11742 cut-off events. [2024-11-08 16:09:32,908 INFO L125 PetriNetUnfolderBase]: For 24407/24717 co-relation queries the response was YES. [2024-11-08 16:09:32,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33339 conditions, 11742 events. 5277/11742 cut-off events. For 24407/24717 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 104275 event pairs, 969 based on Foata normal form. 322/10966 useless extension candidates. Maximal degree in co-relation 33282. Up to 4317 conditions per place. [2024-11-08 16:09:33,050 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 225 selfloop transitions, 31 changer transitions 0/298 dead transitions. [2024-11-08 16:09:33,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 298 transitions, 2289 flow [2024-11-08 16:09:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 16:09:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 16:09:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 596 transitions. [2024-11-08 16:09:33,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6858457997698504 [2024-11-08 16:09:33,054 INFO L175 Difference]: Start difference. First operand has 136 places, 122 transitions, 722 flow. Second operand 11 states and 596 transitions. [2024-11-08 16:09:33,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 298 transitions, 2289 flow [2024-11-08 16:09:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 298 transitions, 2194 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-08 16:09:33,186 INFO L231 Difference]: Finished difference. Result has 142 places, 142 transitions, 920 flow [2024-11-08 16:09:33,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=920, PETRI_PLACES=142, PETRI_TRANSITIONS=142} [2024-11-08 16:09:33,189 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 70 predicate places. [2024-11-08 16:09:33,189 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 142 transitions, 920 flow [2024-11-08 16:09:33,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2024-11-08 16:09:33,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:33,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:33,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:09:33,191 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:33,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1508556939, now seen corresponding path program 1 times [2024-11-08 16:09:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:33,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482405479] [2024-11-08 16:09:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:33,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:33,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:33,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482405479] [2024-11-08 16:09:33,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482405479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:33,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:33,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487958217] [2024-11-08 16:09:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:33,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:33,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:33,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2024-11-08 16:09:33,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 142 transitions, 920 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2024-11-08 16:09:33,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:33,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2024-11-08 16:09:33,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:35,341 INFO L124 PetriNetUnfolderBase]: 3697/9032 cut-off events. [2024-11-08 16:09:35,342 INFO L125 PetriNetUnfolderBase]: For 23482/23879 co-relation queries the response was YES. [2024-11-08 16:09:35,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25677 conditions, 9032 events. 3697/9032 cut-off events. For 23482/23879 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 81962 event pairs, 1391 based on Foata normal form. 316/8419 useless extension candidates. Maximal degree in co-relation 25620. Up to 3159 conditions per place. [2024-11-08 16:09:35,494 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 145 selfloop transitions, 8 changer transitions 0/213 dead transitions. [2024-11-08 16:09:35,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 213 transitions, 1801 flow [2024-11-08 16:09:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:35,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-11-08 16:09:35,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7278481012658228 [2024-11-08 16:09:35,499 INFO L175 Difference]: Start difference. First operand has 142 places, 142 transitions, 920 flow. Second operand 4 states and 230 transitions. [2024-11-08 16:09:35,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 213 transitions, 1801 flow [2024-11-08 16:09:35,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 1780 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-08 16:09:35,630 INFO L231 Difference]: Finished difference. Result has 144 places, 140 transitions, 906 flow [2024-11-08 16:09:35,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=906, PETRI_PLACES=144, PETRI_TRANSITIONS=140} [2024-11-08 16:09:35,631 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 72 predicate places. [2024-11-08 16:09:35,632 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 140 transitions, 906 flow [2024-11-08 16:09:35,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2024-11-08 16:09:35,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:35,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:35,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:09:35,634 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:35,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1508557964, now seen corresponding path program 1 times [2024-11-08 16:09:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:35,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269424477] [2024-11-08 16:09:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:35,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269424477] [2024-11-08 16:09:35,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269424477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:35,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:35,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:35,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770754209] [2024-11-08 16:09:35,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:35,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:35,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:35,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:35,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:35,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2024-11-08 16:09:35,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 140 transitions, 906 flow. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:35,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:35,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2024-11-08 16:09:35,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:38,224 INFO L124 PetriNetUnfolderBase]: 5029/11393 cut-off events. [2024-11-08 16:09:38,225 INFO L125 PetriNetUnfolderBase]: For 29277/29718 co-relation queries the response was YES. [2024-11-08 16:09:38,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33208 conditions, 11393 events. 5029/11393 cut-off events. For 29277/29718 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 101914 event pairs, 1184 based on Foata normal form. 239/10893 useless extension candidates. Maximal degree in co-relation 33151. Up to 5230 conditions per place. [2024-11-08 16:09:38,371 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 182 selfloop transitions, 23 changer transitions 0/256 dead transitions. [2024-11-08 16:09:38,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 256 transitions, 2117 flow [2024-11-08 16:09:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:09:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:09:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2024-11-08 16:09:38,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7522603978300181 [2024-11-08 16:09:38,377 INFO L175 Difference]: Start difference. First operand has 144 places, 140 transitions, 906 flow. Second operand 7 states and 416 transitions. [2024-11-08 16:09:38,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 256 transitions, 2117 flow [2024-11-08 16:09:38,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 256 transitions, 2097 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:09:38,559 INFO L231 Difference]: Finished difference. Result has 152 places, 151 transitions, 1055 flow [2024-11-08 16:09:38,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1055, PETRI_PLACES=152, PETRI_TRANSITIONS=151} [2024-11-08 16:09:38,560 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 80 predicate places. [2024-11-08 16:09:38,561 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 151 transitions, 1055 flow [2024-11-08 16:09:38,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:38,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:38,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:38,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:09:38,563 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:38,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1828017938, now seen corresponding path program 1 times [2024-11-08 16:09:38,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:38,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842889334] [2024-11-08 16:09:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:38,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:38,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:38,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842889334] [2024-11-08 16:09:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842889334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:09:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872184759] [2024-11-08 16:09:38,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:38,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:38,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2024-11-08 16:09:38,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 151 transitions, 1055 flow. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 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) [2024-11-08 16:09:38,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:38,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2024-11-08 16:09:38,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:41,675 INFO L124 PetriNetUnfolderBase]: 4522/10041 cut-off events. [2024-11-08 16:09:41,676 INFO L125 PetriNetUnfolderBase]: For 27434/27891 co-relation queries the response was YES. [2024-11-08 16:09:41,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30927 conditions, 10041 events. 4522/10041 cut-off events. For 27434/27891 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87243 event pairs, 1612 based on Foata normal form. 261/9695 useless extension candidates. Maximal degree in co-relation 30865. Up to 3742 conditions per place. [2024-11-08 16:09:41,816 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 183 selfloop transitions, 20 changer transitions 0/260 dead transitions. [2024-11-08 16:09:41,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 260 transitions, 2182 flow [2024-11-08 16:09:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-11-08 16:09:41,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7025316455696202 [2024-11-08 16:09:41,820 INFO L175 Difference]: Start difference. First operand has 152 places, 151 transitions, 1055 flow. Second operand 6 states and 333 transitions. [2024-11-08 16:09:41,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 260 transitions, 2182 flow [2024-11-08 16:09:42,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 260 transitions, 2150 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-08 16:09:42,116 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 1090 flow [2024-11-08 16:09:42,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1090, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2024-11-08 16:09:42,117 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 84 predicate places. [2024-11-08 16:09:42,118 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 1090 flow [2024-11-08 16:09:42,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 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) [2024-11-08 16:09:42,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:42,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:42,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:09:42,120 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:42,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1828016913, now seen corresponding path program 1 times [2024-11-08 16:09:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:42,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702825189] [2024-11-08 16:09:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:42,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:42,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702825189] [2024-11-08 16:09:42,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702825189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:42,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:42,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586824753] [2024-11-08 16:09:42,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:42,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:42,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:42,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:42,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2024-11-08 16:09:42,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 1090 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2024-11-08 16:09:42,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:42,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2024-11-08 16:09:42,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:44,655 INFO L124 PetriNetUnfolderBase]: 4912/10261 cut-off events. [2024-11-08 16:09:44,655 INFO L125 PetriNetUnfolderBase]: For 28814/29325 co-relation queries the response was YES. [2024-11-08 16:09:44,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33109 conditions, 10261 events. 4912/10261 cut-off events. For 28814/29325 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 86139 event pairs, 1873 based on Foata normal form. 391/10129 useless extension candidates. Maximal degree in co-relation 33046. Up to 4265 conditions per place. [2024-11-08 16:09:44,781 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 127 selfloop transitions, 17 changer transitions 0/206 dead transitions. [2024-11-08 16:09:44,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 206 transitions, 1734 flow [2024-11-08 16:09:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-11-08 16:09:44,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7468354430379747 [2024-11-08 16:09:44,785 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 1090 flow. Second operand 4 states and 236 transitions. [2024-11-08 16:09:44,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 206 transitions, 1734 flow [2024-11-08 16:09:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 206 transitions, 1688 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-08 16:09:45,034 INFO L231 Difference]: Finished difference. Result has 157 places, 152 transitions, 1105 flow [2024-11-08 16:09:45,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1105, PETRI_PLACES=157, PETRI_TRANSITIONS=152} [2024-11-08 16:09:45,036 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 85 predicate places. [2024-11-08 16:09:45,036 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 152 transitions, 1105 flow [2024-11-08 16:09:45,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2024-11-08 16:09:45,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:45,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:45,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:09:45,037 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:45,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:45,038 INFO L85 PathProgramCache]: Analyzing trace with hash 479343995, now seen corresponding path program 1 times [2024-11-08 16:09:45,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:45,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977935745] [2024-11-08 16:09:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:45,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:45,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:45,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977935745] [2024-11-08 16:09:45,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977935745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:45,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:45,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:09:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352010676] [2024-11-08 16:09:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:45,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:09:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:09:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:09:45,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-11-08 16:09:45,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 152 transitions, 1105 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 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) [2024-11-08 16:09:45,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:45,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-11-08 16:09:45,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:49,302 INFO L124 PetriNetUnfolderBase]: 6365/13248 cut-off events. [2024-11-08 16:09:49,303 INFO L125 PetriNetUnfolderBase]: For 49315/50097 co-relation queries the response was YES. [2024-11-08 16:09:49,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43746 conditions, 13248 events. 6365/13248 cut-off events. For 49315/50097 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 114987 event pairs, 1240 based on Foata normal form. 555/13028 useless extension candidates. Maximal degree in co-relation 43683. Up to 5621 conditions per place. [2024-11-08 16:09:49,482 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 265 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2024-11-08 16:09:49,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 352 transitions, 3173 flow [2024-11-08 16:09:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 16:09:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 16:09:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 594 transitions. [2024-11-08 16:09:49,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6835443037974683 [2024-11-08 16:09:49,488 INFO L175 Difference]: Start difference. First operand has 157 places, 152 transitions, 1105 flow. Second operand 11 states and 594 transitions. [2024-11-08 16:09:49,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 352 transitions, 3173 flow [2024-11-08 16:09:50,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 352 transitions, 3114 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:09:50,075 INFO L231 Difference]: Finished difference. Result has 169 places, 172 transitions, 1368 flow [2024-11-08 16:09:50,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1368, PETRI_PLACES=169, PETRI_TRANSITIONS=172} [2024-11-08 16:09:50,076 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 97 predicate places. [2024-11-08 16:09:50,076 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 172 transitions, 1368 flow [2024-11-08 16:09:50,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 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) [2024-11-08 16:09:50,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:50,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:50,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:09:50,078 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:50,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1562450944, now seen corresponding path program 1 times [2024-11-08 16:09:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:50,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75037561] [2024-11-08 16:09:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:50,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:50,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75037561] [2024-11-08 16:09:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75037561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:50,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:50,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:50,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751685799] [2024-11-08 16:09:50,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:50,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:50,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:50,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 79 [2024-11-08 16:09:50,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 172 transitions, 1368 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2024-11-08 16:09:50,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:50,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 79 [2024-11-08 16:09:50,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:53,274 INFO L124 PetriNetUnfolderBase]: 4799/10785 cut-off events. [2024-11-08 16:09:53,274 INFO L125 PetriNetUnfolderBase]: For 40261/40738 co-relation queries the response was YES. [2024-11-08 16:09:53,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37287 conditions, 10785 events. 4799/10785 cut-off events. For 40261/40738 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 96660 event pairs, 2396 based on Foata normal form. 382/10601 useless extension candidates. Maximal degree in co-relation 37219. Up to 5711 conditions per place. [2024-11-08 16:09:53,427 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 168 selfloop transitions, 8 changer transitions 0/247 dead transitions. [2024-11-08 16:09:53,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 247 transitions, 2324 flow [2024-11-08 16:09:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-08 16:09:53,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7563291139240507 [2024-11-08 16:09:53,430 INFO L175 Difference]: Start difference. First operand has 169 places, 172 transitions, 1368 flow. Second operand 4 states and 239 transitions. [2024-11-08 16:09:53,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 247 transitions, 2324 flow [2024-11-08 16:09:53,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 247 transitions, 2300 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-08 16:09:53,666 INFO L231 Difference]: Finished difference. Result has 173 places, 173 transitions, 1399 flow [2024-11-08 16:09:53,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1399, PETRI_PLACES=173, PETRI_TRANSITIONS=173} [2024-11-08 16:09:53,667 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 101 predicate places. [2024-11-08 16:09:53,667 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 173 transitions, 1399 flow [2024-11-08 16:09:53,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2024-11-08 16:09:53,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:53,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:53,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 16:09:53,668 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:53,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1372887622, now seen corresponding path program 1 times [2024-11-08 16:09:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:53,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513485849] [2024-11-08 16:09:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:53,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513485849] [2024-11-08 16:09:53,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513485849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:53,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:53,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:09:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590573294] [2024-11-08 16:09:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:53,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:53,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:53,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2024-11-08 16:09:53,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 173 transitions, 1399 flow. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 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) [2024-11-08 16:09:53,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2024-11-08 16:09:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:57,089 INFO L124 PetriNetUnfolderBase]: 4985/10816 cut-off events. [2024-11-08 16:09:57,089 INFO L125 PetriNetUnfolderBase]: For 46065/46635 co-relation queries the response was YES. [2024-11-08 16:09:57,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38106 conditions, 10816 events. 4985/10816 cut-off events. For 46065/46635 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 93448 event pairs, 1719 based on Foata normal form. 381/10706 useless extension candidates. Maximal degree in co-relation 38037. Up to 4221 conditions per place. [2024-11-08 16:09:57,247 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 244 selfloop transitions, 20 changer transitions 0/330 dead transitions. [2024-11-08 16:09:57,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 330 transitions, 3332 flow [2024-11-08 16:09:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-11-08 16:09:57,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6940928270042194 [2024-11-08 16:09:57,249 INFO L175 Difference]: Start difference. First operand has 173 places, 173 transitions, 1399 flow. Second operand 6 states and 329 transitions. [2024-11-08 16:09:57,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 330 transitions, 3332 flow [2024-11-08 16:09:57,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 330 transitions, 3300 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-08 16:09:57,570 INFO L231 Difference]: Finished difference. Result has 177 places, 174 transitions, 1434 flow [2024-11-08 16:09:57,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1434, PETRI_PLACES=177, PETRI_TRANSITIONS=174} [2024-11-08 16:09:57,571 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2024-11-08 16:09:57,572 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 174 transitions, 1434 flow [2024-11-08 16:09:57,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 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) [2024-11-08 16:09:57,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:57,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:57,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 16:09:57,572 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:09:57,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1372888647, now seen corresponding path program 1 times [2024-11-08 16:09:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:57,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432207621] [2024-11-08 16:09:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432207621] [2024-11-08 16:09:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432207621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:57,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:57,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:57,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545358155] [2024-11-08 16:09:57,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:57,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:57,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:57,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2024-11-08 16:09:57,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 174 transitions, 1434 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2024-11-08 16:09:57,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:57,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2024-11-08 16:09:57,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:00,743 INFO L124 PetriNetUnfolderBase]: 5552/11208 cut-off events. [2024-11-08 16:10:00,743 INFO L125 PetriNetUnfolderBase]: For 49861/50510 co-relation queries the response was YES. [2024-11-08 16:10:00,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41352 conditions, 11208 events. 5552/11208 cut-off events. For 49861/50510 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 92545 event pairs, 2082 based on Foata normal form. 575/11390 useless extension candidates. Maximal degree in co-relation 41282. Up to 4925 conditions per place. [2024-11-08 16:10:00,905 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 164 selfloop transitions, 17 changer transitions 0/252 dead transitions. [2024-11-08 16:10:00,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 252 transitions, 2494 flow [2024-11-08 16:10:00,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:10:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:10:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-11-08 16:10:00,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.740506329113924 [2024-11-08 16:10:00,907 INFO L175 Difference]: Start difference. First operand has 177 places, 174 transitions, 1434 flow. Second operand 4 states and 234 transitions. [2024-11-08 16:10:00,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 252 transitions, 2494 flow [2024-11-08 16:10:01,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 252 transitions, 2442 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-08 16:10:01,187 INFO L231 Difference]: Finished difference. Result has 177 places, 174 transitions, 1443 flow [2024-11-08 16:10:01,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1443, PETRI_PLACES=177, PETRI_TRANSITIONS=174} [2024-11-08 16:10:01,189 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2024-11-08 16:10:01,189 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 174 transitions, 1443 flow [2024-11-08 16:10:01,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2024-11-08 16:10:01,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:01,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:01,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 16:10:01,190 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:10:01,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash 244973775, now seen corresponding path program 1 times [2024-11-08 16:10:01,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:01,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773003197] [2024-11-08 16:10:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:01,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773003197] [2024-11-08 16:10:01,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773003197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:01,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:01,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:10:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417330010] [2024-11-08 16:10:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:01,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:10:01,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:10:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:10:01,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2024-11-08 16:10:01,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 174 transitions, 1443 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-08 16:10:01,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:01,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2024-11-08 16:10:01,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:03,883 INFO L124 PetriNetUnfolderBase]: 3840/9213 cut-off events. [2024-11-08 16:10:03,883 INFO L125 PetriNetUnfolderBase]: For 41153/41595 co-relation queries the response was YES. [2024-11-08 16:10:03,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33608 conditions, 9213 events. 3840/9213 cut-off events. For 41153/41595 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 82904 event pairs, 1284 based on Foata normal form. 400/9244 useless extension candidates. Maximal degree in co-relation 33539. Up to 3188 conditions per place. [2024-11-08 16:10:04,063 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 167 selfloop transitions, 4 changer transitions 0/250 dead transitions. [2024-11-08 16:10:04,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 250 transitions, 2407 flow [2024-11-08 16:10:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:10:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:10:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-08 16:10:04,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7974683544303798 [2024-11-08 16:10:04,066 INFO L175 Difference]: Start difference. First operand has 177 places, 174 transitions, 1443 flow. Second operand 4 states and 252 transitions. [2024-11-08 16:10:04,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 250 transitions, 2407 flow [2024-11-08 16:10:04,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 250 transitions, 2368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:10:04,416 INFO L231 Difference]: Finished difference. Result has 181 places, 175 transitions, 1449 flow [2024-11-08 16:10:04,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1449, PETRI_PLACES=181, PETRI_TRANSITIONS=175} [2024-11-08 16:10:04,417 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 109 predicate places. [2024-11-08 16:10:04,417 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 175 transitions, 1449 flow [2024-11-08 16:10:04,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-08 16:10:04,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:04,418 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 16:10:04,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 16:10:04,419 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:10:04,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1147199414, now seen corresponding path program 2 times [2024-11-08 16:10:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:04,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17897747] [2024-11-08 16:10:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:04,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17897747] [2024-11-08 16:10:04,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17897747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:04,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645284849] [2024-11-08 16:10:04,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:10:04,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:04,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:04,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:04,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:10:04,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:10:04,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:10:04,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:10:04,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:10:05,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:10:05,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645284849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:05,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:05,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 16:10:05,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943904126] [2024-11-08 16:10:05,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:05,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:10:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:10:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:10:05,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2024-11-08 16:10:05,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 175 transitions, 1449 flow. Second operand has 15 states, 15 states have (on average 44.53333333333333) internal successors, (668), 15 states have internal predecessors, (668), 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) [2024-11-08 16:10:05,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:05,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2024-11-08 16:10:05,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:08,673 INFO L124 PetriNetUnfolderBase]: 3627/8810 cut-off events. [2024-11-08 16:10:08,673 INFO L125 PetriNetUnfolderBase]: For 38276/38627 co-relation queries the response was YES. [2024-11-08 16:10:08,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32730 conditions, 8810 events. 3627/8810 cut-off events. For 38276/38627 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 79947 event pairs, 2277 based on Foata normal form. 264/8668 useless extension candidates. Maximal degree in co-relation 32625. Up to 5365 conditions per place. [2024-11-08 16:10:08,834 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 96 selfloop transitions, 20 changer transitions 0/193 dead transitions. [2024-11-08 16:10:08,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 193 transitions, 1759 flow [2024-11-08 16:10:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:10:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 16:10:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 709 transitions. [2024-11-08 16:10:08,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5983122362869199 [2024-11-08 16:10:08,839 INFO L175 Difference]: Start difference. First operand has 181 places, 175 transitions, 1449 flow. Second operand 15 states and 709 transitions. [2024-11-08 16:10:08,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 193 transitions, 1759 flow [2024-11-08 16:10:09,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 193 transitions, 1744 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-08 16:10:09,215 INFO L231 Difference]: Finished difference. Result has 190 places, 179 transitions, 1511 flow [2024-11-08 16:10:09,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1511, PETRI_PLACES=190, PETRI_TRANSITIONS=179} [2024-11-08 16:10:09,217 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 118 predicate places. [2024-11-08 16:10:09,217 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 179 transitions, 1511 flow [2024-11-08 16:10:09,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 44.53333333333333) internal successors, (668), 15 states have internal predecessors, (668), 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) [2024-11-08 16:10:09,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:09,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:09,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:10:09,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:09,419 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:10:09,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1118626422, now seen corresponding path program 1 times [2024-11-08 16:10:09,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:09,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466439865] [2024-11-08 16:10:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:09,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:09,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466439865] [2024-11-08 16:10:09,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466439865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:09,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:09,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:10:09,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220966757] [2024-11-08 16:10:09,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:09,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:10:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:09,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:10:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:10:09,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 79 [2024-11-08 16:10:09,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 179 transitions, 1511 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-08 16:10:09,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:09,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 79 [2024-11-08 16:10:09,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:13,095 INFO L124 PetriNetUnfolderBase]: 4976/10519 cut-off events. [2024-11-08 16:10:13,095 INFO L125 PetriNetUnfolderBase]: For 49744/50327 co-relation queries the response was YES. [2024-11-08 16:10:13,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39678 conditions, 10519 events. 4976/10519 cut-off events. For 49744/50327 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 88868 event pairs, 2494 based on Foata normal form. 518/10683 useless extension candidates. Maximal degree in co-relation 39498. Up to 5905 conditions per place. [2024-11-08 16:10:13,283 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 182 selfloop transitions, 8 changer transitions 0/260 dead transitions. [2024-11-08 16:10:13,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 260 transitions, 2633 flow [2024-11-08 16:10:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:10:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:10:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-11-08 16:10:13,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-08 16:10:13,288 INFO L175 Difference]: Start difference. First operand has 190 places, 179 transitions, 1511 flow. Second operand 4 states and 237 transitions. [2024-11-08 16:10:13,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 260 transitions, 2633 flow [2024-11-08 16:10:13,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 260 transitions, 2555 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-08 16:10:13,632 INFO L231 Difference]: Finished difference. Result has 182 places, 180 transitions, 1478 flow [2024-11-08 16:10:13,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1478, PETRI_PLACES=182, PETRI_TRANSITIONS=180} [2024-11-08 16:10:13,633 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 110 predicate places. [2024-11-08 16:10:13,633 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 180 transitions, 1478 flow [2024-11-08 16:10:13,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-08 16:10:13,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:13,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:13,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 16:10:13,634 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:10:13,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -628684489, now seen corresponding path program 1 times [2024-11-08 16:10:13,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:13,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322796884] [2024-11-08 16:10:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:13,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:13,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322796884] [2024-11-08 16:10:13,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322796884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:13,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:13,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:10:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26426863] [2024-11-08 16:10:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:13,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:10:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:10:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:10:13,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2024-11-08 16:10:13,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 180 transitions, 1478 flow. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2024-11-08 16:10:13,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:13,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2024-11-08 16:10:13,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:16,750 INFO L124 PetriNetUnfolderBase]: 3857/9021 cut-off events. [2024-11-08 16:10:16,751 INFO L125 PetriNetUnfolderBase]: For 43936/44367 co-relation queries the response was YES. [2024-11-08 16:10:16,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34358 conditions, 9021 events. 3857/9021 cut-off events. For 43936/44367 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 79653 event pairs, 1310 based on Foata normal form. 412/9139 useless extension candidates. Maximal degree in co-relation 34210. Up to 3210 conditions per place. [2024-11-08 16:10:16,873 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 175 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2024-11-08 16:10:16,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 258 transitions, 2516 flow [2024-11-08 16:10:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:10:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:10:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-08 16:10:16,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7911392405063291 [2024-11-08 16:10:16,876 INFO L175 Difference]: Start difference. First operand has 182 places, 180 transitions, 1478 flow. Second operand 4 states and 250 transitions. [2024-11-08 16:10:16,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 258 transitions, 2516 flow [2024-11-08 16:10:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 258 transitions, 2512 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-08 16:10:17,151 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 1497 flow [2024-11-08 16:10:17,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1497, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2024-11-08 16:10:17,152 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 115 predicate places. [2024-11-08 16:10:17,153 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 1497 flow [2024-11-08 16:10:17,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2024-11-08 16:10:17,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:17,153 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:17,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 16:10:17,154 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:10:17,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 401959354, now seen corresponding path program 1 times [2024-11-08 16:10:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510852849] [2024-11-08 16:10:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510852849] [2024-11-08 16:10:17,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510852849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:17,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070569662] [2024-11-08 16:10:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:17,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:17,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:17,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:10:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:17,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 16:10:17,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:17,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:18,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070569662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:18,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 16:10:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4878075] [2024-11-08 16:10:18,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:18,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 16:10:18,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:18,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 16:10:18,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-08 16:10:18,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-11-08 16:10:18,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 1497 flow. Second operand has 20 states, 20 states have (on average 40.2) internal successors, (804), 20 states have internal predecessors, (804), 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) [2024-11-08 16:10:18,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:18,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-11-08 16:10:18,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:22,789 INFO L124 PetriNetUnfolderBase]: 6789/15471 cut-off events. [2024-11-08 16:10:22,790 INFO L125 PetriNetUnfolderBase]: For 76595/77320 co-relation queries the response was YES. [2024-11-08 16:10:22,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59782 conditions, 15471 events. 6789/15471 cut-off events. For 76595/77320 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 145566 event pairs, 3274 based on Foata normal form. 435/15435 useless extension candidates. Maximal degree in co-relation 55776. Up to 6141 conditions per place. [2024-11-08 16:10:23,025 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 336 selfloop transitions, 25 changer transitions 10/443 dead transitions. [2024-11-08 16:10:23,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 443 transitions, 4513 flow [2024-11-08 16:10:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:10:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 16:10:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 637 transitions. [2024-11-08 16:10:23,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2024-11-08 16:10:23,028 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 1497 flow. Second operand 13 states and 637 transitions. [2024-11-08 16:10:23,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 443 transitions, 4513 flow [2024-11-08 16:10:23,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 443 transitions, 4492 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:10:23,581 INFO L231 Difference]: Finished difference. Result has 204 places, 192 transitions, 1645 flow [2024-11-08 16:10:23,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1645, PETRI_PLACES=204, PETRI_TRANSITIONS=192} [2024-11-08 16:10:23,582 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 132 predicate places. [2024-11-08 16:10:23,582 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 192 transitions, 1645 flow [2024-11-08 16:10:23,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 40.2) internal successors, (804), 20 states have internal predecessors, (804), 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) [2024-11-08 16:10:23,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:23,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:23,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:10:23,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f362ab-85b1-4849-b8c0-f078ba04a495/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 16:10:23,788 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:10:23,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1135973673, now seen corresponding path program 1 times [2024-11-08 16:10:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:23,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463714196] [2024-11-08 16:10:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:23,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:24,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:24,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463714196] [2024-11-08 16:10:24,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463714196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:24,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:10:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721483718] [2024-11-08 16:10:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:24,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:10:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:10:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:10:24,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-11-08 16:10:24,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 192 transitions, 1645 flow. Second operand has 8 states, 8 states have (on average 40.5) internal successors, (324), 8 states have internal predecessors, (324), 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) [2024-11-08 16:10:24,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:24,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-11-08 16:10:24,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:32,180 INFO L124 PetriNetUnfolderBase]: 16693/33414 cut-off events. [2024-11-08 16:10:32,180 INFO L125 PetriNetUnfolderBase]: For 183815/184965 co-relation queries the response was YES. [2024-11-08 16:10:32,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136957 conditions, 33414 events. 16693/33414 cut-off events. For 183815/184965 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 310857 event pairs, 2422 based on Foata normal form. 1209/34429 useless extension candidates. Maximal degree in co-relation 123411. Up to 8419 conditions per place. [2024-11-08 16:10:32,668 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 546 selfloop transitions, 224 changer transitions 0/823 dead transitions. [2024-11-08 16:10:32,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 823 transitions, 8655 flow [2024-11-08 16:10:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:10:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 16:10:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1309 transitions. [2024-11-08 16:10:32,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6627848101265823 [2024-11-08 16:10:32,676 INFO L175 Difference]: Start difference. First operand has 204 places, 192 transitions, 1645 flow. Second operand 25 states and 1309 transitions. [2024-11-08 16:10:32,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 823 transitions, 8655 flow [2024-11-08 16:10:36,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 823 transitions, 8631 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-08 16:10:36,723 INFO L231 Difference]: Finished difference. Result has 249 places, 417 transitions, 5069 flow [2024-11-08 16:10:36,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5069, PETRI_PLACES=249, PETRI_TRANSITIONS=417} [2024-11-08 16:10:36,725 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 177 predicate places. [2024-11-08 16:10:36,725 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 417 transitions, 5069 flow [2024-11-08 16:10:36,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.5) internal successors, (324), 8 states have internal predecessors, (324), 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) [2024-11-08 16:10:36,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:36,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:36,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-08 16:10:36,726 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:10:36,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash -228248309, now seen corresponding path program 1 times [2024-11-08 16:10:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:36,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070501728] [2024-11-08 16:10:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:37,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:37,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070501728] [2024-11-08 16:10:37,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070501728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:37,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:37,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:10:37,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80716757] [2024-11-08 16:10:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:37,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:10:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:37,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:10:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:10:37,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-11-08 16:10:37,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 417 transitions, 5069 flow. Second operand has 8 states, 8 states have (on average 40.5) internal successors, (324), 8 states have internal predecessors, (324), 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) [2024-11-08 16:10:37,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:37,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-11-08 16:10:37,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:11:00,810 INFO L124 PetriNetUnfolderBase]: 27083/53895 cut-off events. [2024-11-08 16:11:00,811 INFO L125 PetriNetUnfolderBase]: For 622235/624324 co-relation queries the response was YES. [2024-11-08 16:11:01,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267209 conditions, 53895 events. 27083/53895 cut-off events. For 622235/624324 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 536901 event pairs, 3960 based on Foata normal form. 2245/55777 useless extension candidates. Maximal degree in co-relation 267020. Up to 15795 conditions per place. [2024-11-08 16:11:02,037 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 800 selfloop transitions, 394 changer transitions 0/1247 dead transitions. [2024-11-08 16:11:02,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1247 transitions, 16879 flow [2024-11-08 16:11:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:11:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 16:11:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1309 transitions. [2024-11-08 16:11:02,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6627848101265823 [2024-11-08 16:11:02,045 INFO L175 Difference]: Start difference. First operand has 249 places, 417 transitions, 5069 flow. Second operand 25 states and 1309 transitions. [2024-11-08 16:11:02,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 1247 transitions, 16879 flow