./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU --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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:15:11,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:15:11,601 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:15:11,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:15:11,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:15:11,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:15:11,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:15:11,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:15:11,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:15:11,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:15:11,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:15:11,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:15:11,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:15:11,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:15:11,655 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:15:11,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:15:11,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:15:11,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:15:11,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:15:11,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:15:11,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:15:11,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:15:11,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:15:11,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:15:11,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:15:11,661 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:15:11,661 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:15:11,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:15:11,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:15:11,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:15:11,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:15:11,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:15:11,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:15:11,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:15:11,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:11,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:15:11,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:15:11,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:15:11,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:15:11,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:15:11,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:15:11,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:15:11,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:15:11,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:15:11,667 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_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2024-10-31 22:15:11,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:15:12,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:15:12,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:15:12,061 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:15:12,063 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:15:12,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c Unable to find full path for "g++" [2024-10-31 22:15:14,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:14,642 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:14,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-10-31 22:15:14,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/data/feed7aec8/3687261b4a7848ba9e8f83623198eca9/FLAG9f960166c [2024-10-31 22:15:15,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/data/feed7aec8/3687261b4a7848ba9e8f83623198eca9 [2024-10-31 22:15:15,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:15,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:15,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:15,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:15,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:15,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f988ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15, skipping insertion in model container [2024-10-31 22:15:15,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:15:15,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:15,331 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:15:15,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:15,390 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:15:15,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15 WrapperNode [2024-10-31 22:15:15,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:15,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:15,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:15:15,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:15:15,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,438 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2024-10-31 22:15:15,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:15,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:15:15,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:15:15,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:15:15,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,489 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2024-10-31 22:15:15,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:15:15,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:15:15,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:15:15,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:15:15,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:15,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:15:15,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:15:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:15:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:15:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:15:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:15:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:15:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:15:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:15:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:15:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:15:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:15:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:15:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:15:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:15:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:15:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:15:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:15:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:15:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:15:15,601 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:15:15,735 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:15:15,738 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:16,088 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:15:16,089 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:16,384 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:16,385 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:15:16,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:16 BoogieIcfgContainer [2024-10-31 22:15:16,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:16,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:16,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:16,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:16,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:15" (1/3) ... [2024-10-31 22:15:16,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e5946d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:16, skipping insertion in model container [2024-10-31 22:15:16,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15" (2/3) ... [2024-10-31 22:15:16,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e5946d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:16, skipping insertion in model container [2024-10-31 22:15:16,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:16" (3/3) ... [2024-10-31 22:15:16,396 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2024-10-31 22:15:16,417 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:16,417 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-31 22:15:16,417 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:15:16,487 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:15:16,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-10-31 22:15:16,566 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-10-31 22:15:16,567 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:15:16,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-31 22:15:16,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-10-31 22:15:16,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 99 flow [2024-10-31 22:15:16,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:16,592 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;@5ff5857a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:16,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-31 22:15:16,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:16,597 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:15:16,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:16,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:16,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:15:16,599 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:16,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash 465805, now seen corresponding path program 1 times [2024-10-31 22:15:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:16,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107634415] [2024-10-31 22:15:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:16,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:17,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:17,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107634415] [2024-10-31 22:15:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107634415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:17,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624860351] [2024-10-31 22:15:17,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:17,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:17,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:17,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:15:17,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:17,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:17,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:15:17,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:17,504 INFO L124 PetriNetUnfolderBase]: 431/813 cut-off events. [2024-10-31 22:15:17,505 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-31 22:15:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 813 events. 431/813 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4111 event pairs, 306 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1345. Up to 625 conditions per place. [2024-10-31 22:15:17,527 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-31 22:15:17,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 163 flow [2024-10-31 22:15:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-31 22:15:17,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-10-31 22:15:17,553 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 99 flow. Second operand 4 states and 107 transitions. [2024-10-31 22:15:17,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 163 flow [2024-10-31 22:15:17,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:15:17,567 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-10-31 22:15:17,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-31 22:15:17,577 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-10-31 22:15:17,577 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-10-31 22:15:17,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:17,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:17,578 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:15:17,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:17,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:17,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:17,579 INFO L85 PathProgramCache]: Analyzing trace with hash 992352023, now seen corresponding path program 1 times [2024-10-31 22:15:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435565314] [2024-10-31 22:15:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435565314] [2024-10-31 22:15:17,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435565314] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:17,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246247805] [2024-10-31 22:15:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:17,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:17,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:17,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:17,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:15:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:17,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:15:18,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:18,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:15:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246247805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:18,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:15:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:15:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624983970] [2024-10-31 22:15:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:18,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:18,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:15:18,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:15:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-10-31 22:15:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:15:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:18,420 INFO L124 PetriNetUnfolderBase]: 431/812 cut-off events. [2024-10-31 22:15:18,420 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-31 22:15:18,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 812 events. 431/812 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4112 event pairs, 306 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1463. Up to 620 conditions per place. [2024-10-31 22:15:18,432 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 21 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-10-31 22:15:18,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 171 flow [2024-10-31 22:15:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:15:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:15:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-10-31 22:15:18,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-10-31 22:15:18,435 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 6 states and 143 transitions. [2024-10-31 22:15:18,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 171 flow [2024-10-31 22:15:18,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:18,441 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 126 flow [2024-10-31 22:15:18,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-10-31 22:15:18,442 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-10-31 22:15:18,443 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 126 flow [2024-10-31 22:15:18,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-10-31 22:15:18,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:18,443 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:15:18,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:15:18,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-31 22:15:18,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:18,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 698142101, now seen corresponding path program 1 times [2024-10-31 22:15:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:18,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506057141] [2024-10-31 22:15:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506057141] [2024-10-31 22:15:18,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506057141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:18,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463247169] [2024-10-31 22:15:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:18,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:18,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:18,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:18,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:15:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:18,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:15:18,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:18,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:18,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463247169] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:18,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:18,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:15:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300595014] [2024-10-31 22:15:18,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:18,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:15:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:18,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:15:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:15:19,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:15:19,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 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) [2024-10-31 22:15:19,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:19,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:15:19,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:19,296 INFO L124 PetriNetUnfolderBase]: 434/824 cut-off events. [2024-10-31 22:15:19,297 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-31 22:15:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 824 events. 434/824 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4228 event pairs, 306 based on Foata normal form. 3/766 useless extension candidates. Maximal degree in co-relation 1464. Up to 627 conditions per place. [2024-10-31 22:15:19,304 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-10-31 22:15:19,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 254 flow [2024-10-31 22:15:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:15:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:15:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-10-31 22:15:19,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-10-31 22:15:19,308 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 126 flow. Second operand 10 states and 230 transitions. [2024-10-31 22:15:19,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 254 flow [2024-10-31 22:15:19,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-31 22:15:19,315 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 178 flow [2024-10-31 22:15:19,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-10-31 22:15:19,318 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2024-10-31 22:15:19,318 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 178 flow [2024-10-31 22:15:19,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 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) [2024-10-31 22:15:19,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:19,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:19,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:15:19,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-31 22:15:19,519 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:19,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1906104600, now seen corresponding path program 1 times [2024-10-31 22:15:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840427864] [2024-10-31 22:15:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:19,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840427864] [2024-10-31 22:15:19,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840427864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:19,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:19,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:19,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267894386] [2024-10-31 22:15:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:19,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:19,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:19,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:19,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:15:19,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:19,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:19,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:15:19,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:20,095 INFO L124 PetriNetUnfolderBase]: 1064/1841 cut-off events. [2024-10-31 22:15:20,095 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-31 22:15:20,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1841 events. 1064/1841 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10092 event pairs, 449 based on Foata normal form. 42/1787 useless extension candidates. Maximal degree in co-relation 3453. Up to 1096 conditions per place. [2024-10-31 22:15:20,109 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 65 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-10-31 22:15:20,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 382 flow [2024-10-31 22:15:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-31 22:15:20,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6968085106382979 [2024-10-31 22:15:20,111 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2024-10-31 22:15:20,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 382 flow [2024-10-31 22:15:20,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 371 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:20,117 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 196 flow [2024-10-31 22:15:20,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-10-31 22:15:20,119 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-10-31 22:15:20,120 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 196 flow [2024-10-31 22:15:20,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:20,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:20,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:20,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:15:20,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:20,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash -412023367, now seen corresponding path program 1 times [2024-10-31 22:15:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254771399] [2024-10-31 22:15:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254771399] [2024-10-31 22:15:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254771399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:20,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466523877] [2024-10-31 22:15:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:20,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:20,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:15:20,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-31 22:15:20,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:20,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:15:20,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:20,669 INFO L124 PetriNetUnfolderBase]: 1708/2786 cut-off events. [2024-10-31 22:15:20,669 INFO L125 PetriNetUnfolderBase]: For 769/1064 co-relation queries the response was YES. [2024-10-31 22:15:20,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 2786 events. 1708/2786 cut-off events. For 769/1064 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15424 event pairs, 787 based on Foata normal form. 163/2832 useless extension candidates. Maximal degree in co-relation 6009. Up to 1698 conditions per place. [2024-10-31 22:15:20,693 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 69 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-10-31 22:15:20,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 438 flow [2024-10-31 22:15:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-10-31 22:15:20,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2024-10-31 22:15:20,696 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 196 flow. Second operand 4 states and 129 transitions. [2024-10-31 22:15:20,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 438 flow [2024-10-31 22:15:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:20,701 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 222 flow [2024-10-31 22:15:20,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-31 22:15:20,702 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-10-31 22:15:20,702 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 222 flow [2024-10-31 22:15:20,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-31 22:15:20,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:20,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:20,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:15:20,707 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:20,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash -349493877, now seen corresponding path program 1 times [2024-10-31 22:15:20,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627487068] [2024-10-31 22:15:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627487068] [2024-10-31 22:15:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627487068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:20,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:20,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:20,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744428355] [2024-10-31 22:15:20,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:20,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:20,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:20,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-10-31 22:15:20,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-31 22:15:20,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:20,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-10-31 22:15:20,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:21,142 INFO L124 PetriNetUnfolderBase]: 1059/1948 cut-off events. [2024-10-31 22:15:21,142 INFO L125 PetriNetUnfolderBase]: For 773/1030 co-relation queries the response was YES. [2024-10-31 22:15:21,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 1948 events. 1059/1948 cut-off events. For 773/1030 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11484 event pairs, 724 based on Foata normal form. 92/1904 useless extension candidates. Maximal degree in co-relation 4333. Up to 1469 conditions per place. [2024-10-31 22:15:21,161 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-31 22:15:21,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 297 flow [2024-10-31 22:15:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-31 22:15:21,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-10-31 22:15:21,163 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 222 flow. Second operand 3 states and 90 transitions. [2024-10-31 22:15:21,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 297 flow [2024-10-31 22:15:21,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:21,168 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2024-10-31 22:15:21,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-31 22:15:21,172 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-10-31 22:15:21,172 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2024-10-31 22:15:21,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-31 22:15:21,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:21,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:21,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:15:21,173 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:21,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash 55412033, now seen corresponding path program 1 times [2024-10-31 22:15:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:21,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609138983] [2024-10-31 22:15:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:21,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:15:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:21,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609138983] [2024-10-31 22:15:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609138983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:21,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:21,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:15:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393917760] [2024-10-31 22:15:21,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:21,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:21,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:15:21,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-10-31 22:15:21,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:21,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:15:21,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:21,728 INFO L124 PetriNetUnfolderBase]: 1495/2340 cut-off events. [2024-10-31 22:15:21,728 INFO L125 PetriNetUnfolderBase]: For 918/1325 co-relation queries the response was YES. [2024-10-31 22:15:21,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2340 events. 1495/2340 cut-off events. For 918/1325 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11996 event pairs, 388 based on Foata normal form. 220/2436 useless extension candidates. Maximal degree in co-relation 5450. Up to 786 conditions per place. [2024-10-31 22:15:21,744 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-10-31 22:15:21,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 464 flow [2024-10-31 22:15:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:15:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:15:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-10-31 22:15:21,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2024-10-31 22:15:21,746 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 5 states and 139 transitions. [2024-10-31 22:15:21,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 464 flow [2024-10-31 22:15:21,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:21,749 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 230 flow [2024-10-31 22:15:21,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-10-31 22:15:21,750 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2024-10-31 22:15:21,751 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 230 flow [2024-10-31 22:15:21,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-10-31 22:15:21,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:21,751 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:15:21,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:15:21,752 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:21,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash -670343073, now seen corresponding path program 2 times [2024-10-31 22:15:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:21,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460982070] [2024-10-31 22:15:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:21,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:21,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460982070] [2024-10-31 22:15:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460982070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680625938] [2024-10-31 22:15:21,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:15:21,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:21,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:21,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:21,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:15:22,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:15:22,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:15:22,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:15:22,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:15:22,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:15:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680625938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:22,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:22,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-31 22:15:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797076571] [2024-10-31 22:15:22,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:15:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:15:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:15:22,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:15:22,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 230 flow. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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) [2024-10-31 22:15:22,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:22,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:15:22,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:22,724 INFO L124 PetriNetUnfolderBase]: 1060/1879 cut-off events. [2024-10-31 22:15:22,724 INFO L125 PetriNetUnfolderBase]: For 805/1062 co-relation queries the response was YES. [2024-10-31 22:15:22,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 1879 events. 1060/1879 cut-off events. For 805/1062 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10630 event pairs, 724 based on Foata normal form. 93/1909 useless extension candidates. Maximal degree in co-relation 4446. Up to 1461 conditions per place. [2024-10-31 22:15:22,738 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-10-31 22:15:22,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 322 flow [2024-10-31 22:15:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:15:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:15:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 306 transitions. [2024-10-31 22:15:22,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-10-31 22:15:22,740 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 230 flow. Second operand 14 states and 306 transitions. [2024-10-31 22:15:22,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 322 flow [2024-10-31 22:15:22,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 292 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-31 22:15:22,745 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 244 flow [2024-10-31 22:15:22,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=244, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-10-31 22:15:22,747 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 23 predicate places. [2024-10-31 22:15:22,748 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 244 flow [2024-10-31 22:15:22,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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) [2024-10-31 22:15:22,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:22,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:22,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:15:22,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:15:22,950 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:22,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1717773527, now seen corresponding path program 1 times [2024-10-31 22:15:22,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:22,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114906932] [2024-10-31 22:15:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:23,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:23,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114906932] [2024-10-31 22:15:23,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114906932] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907178324] [2024-10-31 22:15:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:23,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:23,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:23,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:23,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:15:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:23,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:15:23,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:15:23,340 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:15:23,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907178324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:23,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:15:23,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-10-31 22:15:23,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180522140] [2024-10-31 22:15:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:23,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:23,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:15:23,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-31 22:15:23,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-10-31 22:15:23,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:23,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-31 22:15:23,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:23,819 INFO L124 PetriNetUnfolderBase]: 1793/2640 cut-off events. [2024-10-31 22:15:23,819 INFO L125 PetriNetUnfolderBase]: For 1058/1534 co-relation queries the response was YES. [2024-10-31 22:15:23,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 2640 events. 1793/2640 cut-off events. For 1058/1534 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12656 event pairs, 556 based on Foata normal form. 166/2599 useless extension candidates. Maximal degree in co-relation 6195. Up to 1163 conditions per place. [2024-10-31 22:15:23,835 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 62 selfloop transitions, 11 changer transitions 3/90 dead transitions. [2024-10-31 22:15:23,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 502 flow [2024-10-31 22:15:23,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:15:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:15:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-10-31 22:15:23,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-10-31 22:15:23,837 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 244 flow. Second operand 6 states and 153 transitions. [2024-10-31 22:15:23,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 502 flow [2024-10-31 22:15:23,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 434 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-31 22:15:23,840 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 214 flow [2024-10-31 22:15:23,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-31 22:15:23,841 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-10-31 22:15:23,841 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 214 flow [2024-10-31 22:15:23,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-10-31 22:15:23,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:23,842 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:23,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:15:24,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:24,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:24,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1666459564, now seen corresponding path program 1 times [2024-10-31 22:15:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:24,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755056078] [2024-10-31 22:15:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:15:24,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755056078] [2024-10-31 22:15:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755056078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766125740] [2024-10-31 22:15:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:24,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:24,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:24,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:15:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:24,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:15:24,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:24,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766125740] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:24,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:24,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-31 22:15:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027617585] [2024-10-31 22:15:24,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:24,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:15:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:15:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:15:24,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:15:24,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 214 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 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) [2024-10-31 22:15:24,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:24,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:15:24,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:26,268 INFO L124 PetriNetUnfolderBase]: 3700/5788 cut-off events. [2024-10-31 22:15:26,269 INFO L125 PetriNetUnfolderBase]: For 4012/4659 co-relation queries the response was YES. [2024-10-31 22:15:26,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15219 conditions, 5788 events. 3700/5788 cut-off events. For 4012/4659 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 34140 event pairs, 618 based on Foata normal form. 329/5982 useless extension candidates. Maximal degree in co-relation 8934. Up to 860 conditions per place. [2024-10-31 22:15:26,316 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 154 selfloop transitions, 25 changer transitions 6/197 dead transitions. [2024-10-31 22:15:26,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 197 transitions, 1080 flow [2024-10-31 22:15:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:15:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:15:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2024-10-31 22:15:26,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486322188449848 [2024-10-31 22:15:26,319 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 214 flow. Second operand 14 states and 361 transitions. [2024-10-31 22:15:26,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 197 transitions, 1080 flow [2024-10-31 22:15:26,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 197 transitions, 1063 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:15:26,336 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 277 flow [2024-10-31 22:15:26,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=277, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-10-31 22:15:26,337 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-31 22:15:26,337 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 277 flow [2024-10-31 22:15:26,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 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) [2024-10-31 22:15:26,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:26,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:26,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:15:26,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:15:26,542 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:26,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2136954564, now seen corresponding path program 1 times [2024-10-31 22:15:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:26,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071394954] [2024-10-31 22:15:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:26,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:15:26,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:26,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071394954] [2024-10-31 22:15:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071394954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:26,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438096689] [2024-10-31 22:15:26,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:26,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:26,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:26,685 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:26,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:15:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:26,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:15:26,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:15:26,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:15:26,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438096689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:26,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-31 22:15:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810043082] [2024-10-31 22:15:26,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:26,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-31 22:15:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-31 22:15:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:15:27,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:15:27,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 277 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 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) [2024-10-31 22:15:27,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:27,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:15:27,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:27,775 INFO L124 PetriNetUnfolderBase]: 2376/3951 cut-off events. [2024-10-31 22:15:27,775 INFO L125 PetriNetUnfolderBase]: For 3662/3840 co-relation queries the response was YES. [2024-10-31 22:15:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10918 conditions, 3951 events. 2376/3951 cut-off events. For 3662/3840 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 23066 event pairs, 1687 based on Foata normal form. 70/3920 useless extension candidates. Maximal degree in co-relation 6998. Up to 2669 conditions per place. [2024-10-31 22:15:27,805 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 30 selfloop transitions, 12 changer transitions 35/92 dead transitions. [2024-10-31 22:15:27,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 541 flow [2024-10-31 22:15:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:15:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:15:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-10-31 22:15:27,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-10-31 22:15:27,807 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 277 flow. Second operand 8 states and 203 transitions. [2024-10-31 22:15:27,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 541 flow [2024-10-31 22:15:27,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 497 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-10-31 22:15:27,817 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 241 flow [2024-10-31 22:15:27,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-10-31 22:15:27,818 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2024-10-31 22:15:27,818 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 241 flow [2024-10-31 22:15:27,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 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) [2024-10-31 22:15:27,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:27,819 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:27,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:15:28,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:28,020 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:28,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 121885124, now seen corresponding path program 1 times [2024-10-31 22:15:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:28,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118587854] [2024-10-31 22:15:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:15:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118587854] [2024-10-31 22:15:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118587854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868346288] [2024-10-31 22:15:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:28,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:28,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:28,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:28,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:15:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:28,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:15:28,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:15:28,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:15:28,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868346288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:28,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:28,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:15:28,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385931215] [2024-10-31 22:15:28,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:28,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:15:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:15:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:15:28,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:15:28,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 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) [2024-10-31 22:15:28,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:28,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:15:28,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:29,532 INFO L124 PetriNetUnfolderBase]: 4141/6599 cut-off events. [2024-10-31 22:15:29,533 INFO L125 PetriNetUnfolderBase]: For 5702/6805 co-relation queries the response was YES. [2024-10-31 22:15:29,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17877 conditions, 6599 events. 4141/6599 cut-off events. For 5702/6805 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 37483 event pairs, 847 based on Foata normal form. 536/7106 useless extension candidates. Maximal degree in co-relation 17801. Up to 2281 conditions per place. [2024-10-31 22:15:29,584 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 172 selfloop transitions, 13 changer transitions 0/198 dead transitions. [2024-10-31 22:15:29,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 198 transitions, 1149 flow [2024-10-31 22:15:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:15:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:15:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-10-31 22:15:29,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2024-10-31 22:15:29,587 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 241 flow. Second operand 10 states and 328 transitions. [2024-10-31 22:15:29,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 198 transitions, 1149 flow [2024-10-31 22:15:29,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 198 transitions, 1070 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-10-31 22:15:29,603 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 280 flow [2024-10-31 22:15:29,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2024-10-31 22:15:29,604 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-31 22:15:29,604 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 280 flow [2024-10-31 22:15:29,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 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) [2024-10-31 22:15:29,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:29,605 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:29,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:15:29,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-31 22:15:29,806 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:29,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:29,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2119395846, now seen corresponding path program 2 times [2024-10-31 22:15:29,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:29,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436803453] [2024-10-31 22:15:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:29,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:15:29,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:29,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436803453] [2024-10-31 22:15:29,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436803453] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670727647] [2024-10-31 22:15:29,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:15:29,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:29,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:29,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:29,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:15:30,036 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:15:30,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:15:30,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:15:30,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:15:30,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:15:30,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670727647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:30,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:15:30,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-31 22:15:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782497738] [2024-10-31 22:15:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:30,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:30,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:15:30,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-31 22:15:30,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:30,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:30,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-31 22:15:30,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:31,189 INFO L124 PetriNetUnfolderBase]: 5266/7821 cut-off events. [2024-10-31 22:15:31,189 INFO L125 PetriNetUnfolderBase]: For 9063/9666 co-relation queries the response was YES. [2024-10-31 22:15:31,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22583 conditions, 7821 events. 5266/7821 cut-off events. For 9063/9666 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 42910 event pairs, 685 based on Foata normal form. 278/7855 useless extension candidates. Maximal degree in co-relation 18290. Up to 3135 conditions per place. [2024-10-31 22:15:31,241 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 86 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2024-10-31 22:15:31,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 678 flow [2024-10-31 22:15:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-31 22:15:31,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2024-10-31 22:15:31,243 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 280 flow. Second operand 4 states and 119 transitions. [2024-10-31 22:15:31,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 678 flow [2024-10-31 22:15:31,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 649 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:31,264 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 279 flow [2024-10-31 22:15:31,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-10-31 22:15:31,265 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-31 22:15:31,266 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 279 flow [2024-10-31 22:15:31,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:31,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:31,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:31,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:15:31,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 22:15:31,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:31,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1276761291, now seen corresponding path program 1 times [2024-10-31 22:15:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:31,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498397401] [2024-10-31 22:15:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:31,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:15:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:31,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498397401] [2024-10-31 22:15:31,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498397401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:31,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171350889] [2024-10-31 22:15:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:31,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:31,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:31,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:31,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:15:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:31,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:15:31,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:31,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:32,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171350889] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:32,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:32,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2024-10-31 22:15:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114868410] [2024-10-31 22:15:32,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:32,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-31 22:15:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:32,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-31 22:15:32,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:15:32,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:15:32,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 279 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:32,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:32,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:15:32,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:34,771 INFO L124 PetriNetUnfolderBase]: 10706/16024 cut-off events. [2024-10-31 22:15:34,772 INFO L125 PetriNetUnfolderBase]: For 19687/20879 co-relation queries the response was YES. [2024-10-31 22:15:34,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47568 conditions, 16024 events. 10706/16024 cut-off events. For 19687/20879 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 99288 event pairs, 2903 based on Foata normal form. 492/16482 useless extension candidates. Maximal degree in co-relation 38672. Up to 4284 conditions per place. [2024-10-31 22:15:34,869 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 223 selfloop transitions, 25 changer transitions 9/271 dead transitions. [2024-10-31 22:15:34,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 271 transitions, 1754 flow [2024-10-31 22:15:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:15:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 22:15:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2024-10-31 22:15:34,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.523153942428035 [2024-10-31 22:15:34,872 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 279 flow. Second operand 17 states and 418 transitions. [2024-10-31 22:15:34,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 271 transitions, 1754 flow [2024-10-31 22:15:34,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 271 transitions, 1724 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:15:34,942 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 366 flow [2024-10-31 22:15:34,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=366, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-10-31 22:15:34,943 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2024-10-31 22:15:34,943 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 366 flow [2024-10-31 22:15:34,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:34,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:34,944 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:34,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 22:15:35,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-31 22:15:35,148 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:35,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2129131520, now seen corresponding path program 2 times [2024-10-31 22:15:35,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:35,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048353842] [2024-10-31 22:15:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048353842] [2024-10-31 22:15:35,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048353842] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:35,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426046502] [2024-10-31 22:15:35,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:15:35,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:35,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:35,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:35,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 22:15:35,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:15:35,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:15:35,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:15:35,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-31 22:15:35,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-31 22:15:35,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426046502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:35,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:35,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 3, 3] total 17 [2024-10-31 22:15:35,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818957915] [2024-10-31 22:15:35,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:35,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:15:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:15:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:15:36,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:15:36,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 366 flow. Second operand has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 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) [2024-10-31 22:15:36,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:36,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:15:36,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:39,785 INFO L124 PetriNetUnfolderBase]: 15477/22812 cut-off events. [2024-10-31 22:15:39,785 INFO L125 PetriNetUnfolderBase]: For 30264/32068 co-relation queries the response was YES. [2024-10-31 22:15:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70700 conditions, 22812 events. 15477/22812 cut-off events. For 30264/32068 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 147453 event pairs, 3203 based on Foata normal form. 418/23048 useless extension candidates. Maximal degree in co-relation 57481. Up to 4389 conditions per place. [2024-10-31 22:15:39,950 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 198 selfloop transitions, 32 changer transitions 12/256 dead transitions. [2024-10-31 22:15:39,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 256 transitions, 1715 flow [2024-10-31 22:15:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:15:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-31 22:15:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 420 transitions. [2024-10-31 22:15:39,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-31 22:15:39,954 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 366 flow. Second operand 18 states and 420 transitions. [2024-10-31 22:15:39,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 256 transitions, 1715 flow [2024-10-31 22:15:40,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 256 transitions, 1669 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-10-31 22:15:40,134 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 459 flow [2024-10-31 22:15:40,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=459, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-10-31 22:15:40,135 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 53 predicate places. [2024-10-31 22:15:40,135 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 459 flow [2024-10-31 22:15:40,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 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) [2024-10-31 22:15:40,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:40,136 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:15:40,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-31 22:15:40,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:40,337 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:40,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1543289662, now seen corresponding path program 2 times [2024-10-31 22:15:40,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:40,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518186612] [2024-10-31 22:15:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:15:40,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518186612] [2024-10-31 22:15:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518186612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178255595] [2024-10-31 22:15:40,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:15:40,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:40,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:40,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:40,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09ee277e-e585-489c-be2f-59004d5af883/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 22:15:40,770 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:15:40,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:15:40,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:15:40,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-31 22:15:40,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-31 22:15:40,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178255595] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:40,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:40,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-31 22:15:40,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322947958] [2024-10-31 22:15:40,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:40,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:15:40,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:15:40,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:15:41,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:15:41,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 459 flow. Second operand has 13 states, 13 states have (on average 17.307692307692307) internal successors, (225), 13 states have internal predecessors, (225), 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) [2024-10-31 22:15:41,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:41,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:15:41,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand