./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:11:26,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:11:27,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:11:27,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:11:27,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:11:27,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:11:27,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:11:27,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:11:27,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:11:27,062 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:11:27,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:11:27,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:11:27,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:11:27,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:11:27,064 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:11:27,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:11:27,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:11:27,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:11:27,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:11:27,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:11:27,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:11:27,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:11:27,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:11:27,066 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:11:27,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:11:27,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:11:27,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:11:27,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:11:27,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:11:27,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:11:27,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:11:27,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:11:27,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:11:27,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:11:27,068 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-27 20:11:27,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:11:27,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:11:27,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:11:27,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:11:27,416 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:11:27,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-27 20:11:30,416 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/data/8359e42fb/301b9af0fc5740ba86d6c63ff8547d9d/FLAGebe62e6d0 [2024-11-27 20:11:30,825 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:11:30,826 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-27 20:11:30,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/data/8359e42fb/301b9af0fc5740ba86d6c63ff8547d9d/FLAGebe62e6d0 [2024-11-27 20:11:30,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/data/8359e42fb/301b9af0fc5740ba86d6c63ff8547d9d [2024-11-27 20:11:30,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:11:30,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:11:30,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:11:30,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:11:30,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:11:30,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:11:30" (1/1) ... [2024-11-27 20:11:30,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671be122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:30, skipping insertion in model container [2024-11-27 20:11:30,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:11:30" (1/1) ... [2024-11-27 20:11:30,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:11:31,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:11:31,184 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:11:31,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:11:31,247 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:11:31,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31 WrapperNode [2024-11-27 20:11:31,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:11:31,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:11:31,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:11:31,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:11:31,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,337 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 269 [2024-11-27 20:11:31,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:11:31,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:11:31,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:11:31,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:11:31,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,364 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,399 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 2 writes are split as follows [0, 2]. [2024-11-27 20:11:31,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,421 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:11:31,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:11:31,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:11:31,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:11:31,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (1/1) ... [2024-11-27 20:11:31,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:11:31,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:31,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:11:31,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:11:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:11:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:11:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:11:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:11:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:11:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:11:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:11:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:11:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:11:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:11:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:11:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:11:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:11:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:11:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:11:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:11:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:11:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:11:31,552 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:11:31,695 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:11:31,698 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:11:32,339 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:11:32,339 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:11:32,869 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:11:32,870 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-27 20:11:32,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:11:32 BoogieIcfgContainer [2024-11-27 20:11:32,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:11:32,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:11:32,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:11:32,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:11:32,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:11:30" (1/3) ... [2024-11-27 20:11:32,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e4f0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:11:32, skipping insertion in model container [2024-11-27 20:11:32,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:31" (2/3) ... [2024-11-27 20:11:32,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e4f0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:11:32, skipping insertion in model container [2024-11-27 20:11:32,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:11:32" (3/3) ... [2024-11-27 20:11:32,883 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-27 20:11:32,903 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:11:32,906 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 62 locations, 1 initial locations, 5 loop locations, and 20 error locations. [2024-11-27 20:11:32,906 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:11:33,029 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 20:11:33,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 70 transitions, 161 flow [2024-11-27 20:11:33,159 INFO L124 PetriNetUnfolderBase]: 9/67 cut-off events. [2024-11-27 20:11:33,162 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:11:33,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 9/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 214 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-27 20:11:33,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 70 transitions, 161 flow [2024-11-27 20:11:33,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 65 transitions, 145 flow [2024-11-27 20:11:33,187 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:11:33,201 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;@587b1009, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:11:33,202 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-27 20:11:33,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:11:33,207 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-27 20:11:33,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:11:33,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:33,208 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 20:11:33,209 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:33,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash 798316, now seen corresponding path program 1 times [2024-11-27 20:11:33,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235462356] [2024-11-27 20:11:33,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:33,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:33,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:33,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235462356] [2024-11-27 20:11:33,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235462356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:33,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:33,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:11:33,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218886747] [2024-11-27 20:11:33,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:33,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:33,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:33,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:33,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-27 20:11:33,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 145 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) [2024-11-27 20:11:33,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:33,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-27 20:11:33,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:34,990 INFO L124 PetriNetUnfolderBase]: 2484/4384 cut-off events. [2024-11-27 20:11:34,990 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-11-27 20:11:35,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7980 conditions, 4384 events. 2484/4384 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29001 event pairs, 2170 based on Foata normal form. 2/3256 useless extension candidates. Maximal degree in co-relation 7615. Up to 3366 conditions per place. [2024-11-27 20:11:35,066 INFO L140 encePairwiseOnDemand]: 53/70 looper letters, 32 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2024-11-27 20:11:35,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 199 flow [2024-11-27 20:11:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-27 20:11:35,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-11-27 20:11:35,091 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 145 flow. Second operand 4 states and 125 transitions. [2024-11-27 20:11:35,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 199 flow [2024-11-27 20:11:35,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 190 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:35,112 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 126 flow [2024-11-27 20:11:35,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-27 20:11:35,121 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-27 20:11:35,121 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 126 flow [2024-11-27 20:11:35,121 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) [2024-11-27 20:11:35,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:35,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-27 20:11:35,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:11:35,126 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:35,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:35,127 INFO L85 PathProgramCache]: Analyzing trace with hash 24748596, now seen corresponding path program 1 times [2024-11-27 20:11:35,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:35,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401205278] [2024-11-27 20:11:35,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:35,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:35,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401205278] [2024-11-27 20:11:35,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401205278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:35,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:35,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:11:35,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044608174] [2024-11-27 20:11:35,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:35,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:35,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:35,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:35,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:35,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-27 20:11:35,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 126 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) [2024-11-27 20:11:35,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:35,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-27 20:11:35,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:36,073 INFO L124 PetriNetUnfolderBase]: 2486/4392 cut-off events. [2024-11-27 20:11:36,074 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-27 20:11:36,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7939 conditions, 4392 events. 2486/4392 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29016 event pairs, 2170 based on Foata normal form. 2/3266 useless extension candidates. Maximal degree in co-relation 7891. Up to 3375 conditions per place. [2024-11-27 20:11:36,116 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 37 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-27 20:11:36,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 236 flow [2024-11-27 20:11:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-27 20:11:36,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-11-27 20:11:36,119 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 126 flow. Second operand 4 states and 122 transitions. [2024-11-27 20:11:36,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 236 flow [2024-11-27 20:11:36,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:36,123 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 170 flow [2024-11-27 20:11:36,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-11-27 20:11:36,124 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-11-27 20:11:36,124 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 170 flow [2024-11-27 20:11:36,125 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) [2024-11-27 20:11:36,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:36,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:36,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:11:36,125 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:36,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1469442711, now seen corresponding path program 1 times [2024-11-27 20:11:36,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:36,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486655764] [2024-11-27 20:11:36,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:36,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:36,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:36,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486655764] [2024-11-27 20:11:36,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486655764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:36,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:36,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:11:36,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460082681] [2024-11-27 20:11:36,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:36,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:36,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:36,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:36,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:36,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-27 20:11:36,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:36,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:36,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-27 20:11:36,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:37,185 INFO L124 PetriNetUnfolderBase]: 2626/4679 cut-off events. [2024-11-27 20:11:37,185 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-27 20:11:37,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8486 conditions, 4679 events. 2626/4679 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30930 event pairs, 2297 based on Foata normal form. 101/3617 useless extension candidates. Maximal degree in co-relation 7903. Up to 3375 conditions per place. [2024-11-27 20:11:37,228 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 54 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2024-11-27 20:11:37,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 356 flow [2024-11-27 20:11:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-11-27 20:11:37,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5114285714285715 [2024-11-27 20:11:37,231 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 170 flow. Second operand 5 states and 179 transitions. [2024-11-27 20:11:37,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 356 flow [2024-11-27 20:11:37,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:11:37,238 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 233 flow [2024-11-27 20:11:37,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-27 20:11:37,239 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2024-11-27 20:11:37,239 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 233 flow [2024-11-27 20:11:37,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:37,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:37,240 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-27 20:11:37,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:11:37,240 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:37,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1448154844, now seen corresponding path program 1 times [2024-11-27 20:11:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914047572] [2024-11-27 20:11:37,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:37,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:37,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:37,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914047572] [2024-11-27 20:11:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914047572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501970964] [2024-11-27 20:11:37,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:37,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:37,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:37,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:37,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:11:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:37,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:11:37,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:37,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501970964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:37,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:37,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-27 20:11:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134394709] [2024-11-27 20:11:37,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:37,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:37,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:37,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:37,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:37,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-27 20:11:37,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 233 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:37,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:37,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-27 20:11:37,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:38,727 INFO L124 PetriNetUnfolderBase]: 2591/4567 cut-off events. [2024-11-27 20:11:38,728 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2024-11-27 20:11:38,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9190 conditions, 4567 events. 2591/4567 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29921 event pairs, 2297 based on Foata normal form. 6/3452 useless extension candidates. Maximal degree in co-relation 8576. Up to 3604 conditions per place. [2024-11-27 20:11:38,770 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 39 selfloop transitions, 33 changer transitions 0/88 dead transitions. [2024-11-27 20:11:38,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 515 flow [2024-11-27 20:11:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-11-27 20:11:38,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36857142857142855 [2024-11-27 20:11:38,777 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 233 flow. Second operand 10 states and 258 transitions. [2024-11-27 20:11:38,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 515 flow [2024-11-27 20:11:38,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 511 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:38,787 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 477 flow [2024-11-27 20:11:38,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-11-27 20:11:38,791 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2024-11-27 20:11:38,791 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 477 flow [2024-11-27 20:11:38,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:38,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:38,792 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:38,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:38,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:38,995 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:38,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash 945039481, now seen corresponding path program 1 times [2024-11-27 20:11:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:38,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623413586] [2024-11-27 20:11:38,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623413586] [2024-11-27 20:11:39,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623413586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:39,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835850805] [2024-11-27 20:11:39,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:39,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:39,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:39,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:11:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:39,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:11:39,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:39,553 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:11:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835850805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:39,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:11:39,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-27 20:11:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507319824] [2024-11-27 20:11:39,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:39,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:11:39,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:39,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:11:39,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:11:39,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-27 20:11:39,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:39,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:39,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-27 20:11:39,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:40,094 INFO L124 PetriNetUnfolderBase]: 1828/3312 cut-off events. [2024-11-27 20:11:40,095 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2024-11-27 20:11:40,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6477 conditions, 3312 events. 1828/3312 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20582 event pairs, 1588 based on Foata normal form. 0/2773 useless extension candidates. Maximal degree in co-relation 6369. Up to 2572 conditions per place. [2024-11-27 20:11:40,120 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 66 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2024-11-27 20:11:40,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 599 flow [2024-11-27 20:11:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:11:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:11:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-27 20:11:40,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-27 20:11:40,123 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 477 flow. Second operand 3 states and 105 transitions. [2024-11-27 20:11:40,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 599 flow [2024-11-27 20:11:40,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 506 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:40,132 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 374 flow [2024-11-27 20:11:40,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2024-11-27 20:11:40,135 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-11-27 20:11:40,135 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 374 flow [2024-11-27 20:11:40,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:40,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:40,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:40,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:11:40,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:40,336 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:40,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1760353031, now seen corresponding path program 1 times [2024-11-27 20:11:40,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:40,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099593042] [2024-11-27 20:11:40,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:40,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:40,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099593042] [2024-11-27 20:11:40,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099593042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:40,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:40,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:11:40,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678260042] [2024-11-27 20:11:40,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:40,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:11:40,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:40,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:11:40,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:11:40,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-27 20:11:40,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2024-11-27 20:11:40,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:40,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-27 20:11:40,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:40,988 INFO L124 PetriNetUnfolderBase]: 1664/2976 cut-off events. [2024-11-27 20:11:40,988 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-11-27 20:11:40,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 2976 events. 1664/2976 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17669 event pairs, 584 based on Foata normal form. 72/2579 useless extension candidates. Maximal degree in co-relation 5960. Up to 1751 conditions per place. [2024-11-27 20:11:41,007 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 79 selfloop transitions, 2 changer transitions 1/100 dead transitions. [2024-11-27 20:11:41,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 577 flow [2024-11-27 20:11:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:11:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:11:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-27 20:11:41,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-27 20:11:41,009 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 374 flow. Second operand 3 states and 119 transitions. [2024-11-27 20:11:41,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 577 flow [2024-11-27 20:11:41,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:41,017 INFO L231 Difference]: Finished difference. Result has 73 places, 85 transitions, 379 flow [2024-11-27 20:11:41,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=85} [2024-11-27 20:11:41,019 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-11-27 20:11:41,020 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 85 transitions, 379 flow [2024-11-27 20:11:41,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2024-11-27 20:11:41,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:41,021 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:41,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:11:41,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:41,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1944869116, now seen corresponding path program 1 times [2024-11-27 20:11:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106848279] [2024-11-27 20:11:41,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106848279] [2024-11-27 20:11:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106848279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:41,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:41,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059170185] [2024-11-27 20:11:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:41,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:41,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:41,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:41,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-27 20:11:41,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:41,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:41,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-27 20:11:41,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:41,971 INFO L124 PetriNetUnfolderBase]: 2779/4690 cut-off events. [2024-11-27 20:11:41,971 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-11-27 20:11:41,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10178 conditions, 4690 events. 2779/4690 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 28332 event pairs, 1522 based on Foata normal form. 96/4392 useless extension candidates. Maximal degree in co-relation 10161. Up to 3068 conditions per place. [2024-11-27 20:11:42,005 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 103 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-27 20:11:42,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 123 transitions, 699 flow [2024-11-27 20:11:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-27 20:11:42,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5607142857142857 [2024-11-27 20:11:42,009 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 379 flow. Second operand 4 states and 157 transitions. [2024-11-27 20:11:42,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 123 transitions, 699 flow [2024-11-27 20:11:42,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 123 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:42,016 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 406 flow [2024-11-27 20:11:42,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-11-27 20:11:42,017 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2024-11-27 20:11:42,017 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 406 flow [2024-11-27 20:11:42,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:42,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:42,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:42,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:11:42,018 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:42,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1923161440, now seen corresponding path program 1 times [2024-11-27 20:11:42,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:42,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918185711] [2024-11-27 20:11:42,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:42,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:42,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918185711] [2024-11-27 20:11:42,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918185711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:42,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:42,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:11:42,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066543429] [2024-11-27 20:11:42,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:42,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:11:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:42,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:11:42,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:11:42,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-27 20:11:42,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:42,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:42,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-27 20:11:42,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:42,699 INFO L124 PetriNetUnfolderBase]: 1972/3666 cut-off events. [2024-11-27 20:11:42,699 INFO L125 PetriNetUnfolderBase]: For 1313/1373 co-relation queries the response was YES. [2024-11-27 20:11:42,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8377 conditions, 3666 events. 1972/3666 cut-off events. For 1313/1373 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 23554 event pairs, 896 based on Foata normal form. 18/3326 useless extension candidates. Maximal degree in co-relation 8358. Up to 2593 conditions per place. [2024-11-27 20:11:42,728 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 76 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-11-27 20:11:42,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 589 flow [2024-11-27 20:11:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:11:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:11:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-27 20:11:42,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-11-27 20:11:42,730 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 406 flow. Second operand 3 states and 113 transitions. [2024-11-27 20:11:42,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 589 flow [2024-11-27 20:11:42,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:42,737 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 426 flow [2024-11-27 20:11:42,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-11-27 20:11:42,740 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-11-27 20:11:42,740 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 426 flow [2024-11-27 20:11:42,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:42,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:42,740 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:42,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:11:42,741 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:42,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash 95234791, now seen corresponding path program 1 times [2024-11-27 20:11:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:42,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513544926] [2024-11-27 20:11:42,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513544926] [2024-11-27 20:11:42,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513544926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:42,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:42,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504663777] [2024-11-27 20:11:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:42,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:42,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:42,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:42,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:42,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-27 20:11:42,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:42,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:42,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-27 20:11:42,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:43,646 INFO L124 PetriNetUnfolderBase]: 2309/4285 cut-off events. [2024-11-27 20:11:43,647 INFO L125 PetriNetUnfolderBase]: For 2415/2475 co-relation queries the response was YES. [2024-11-27 20:11:43,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10360 conditions, 4285 events. 2309/4285 cut-off events. For 2415/2475 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 27568 event pairs, 1862 based on Foata normal form. 100/4024 useless extension candidates. Maximal degree in co-relation 10339. Up to 2808 conditions per place. [2024-11-27 20:11:43,681 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 80 selfloop transitions, 8 changer transitions 6/112 dead transitions. [2024-11-27 20:11:43,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 112 transitions, 701 flow [2024-11-27 20:11:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-27 20:11:43,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-27 20:11:43,683 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 426 flow. Second operand 4 states and 147 transitions. [2024-11-27 20:11:43,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 112 transitions, 701 flow [2024-11-27 20:11:43,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 684 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:43,694 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 438 flow [2024-11-27 20:11:43,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2024-11-27 20:11:43,695 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-11-27 20:11:43,695 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 438 flow [2024-11-27 20:11:43,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:43,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:43,698 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-27 20:11:43,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:11:43,698 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:43,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1890789836, now seen corresponding path program 2 times [2024-11-27 20:11:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896519952] [2024-11-27 20:11:43,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:43,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:43,718 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:43,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:11:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:43,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896519952] [2024-11-27 20:11:43,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896519952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:43,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719288659] [2024-11-27 20:11:43,788 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:43,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:43,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:11:43,909 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:43,909 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:43,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:11:43,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:11:43,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:11:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719288659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:44,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:44,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 20:11:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366878683] [2024-11-27 20:11:44,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:44,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:44,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:44,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:44,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:44,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-27 20:11:44,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 438 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) [2024-11-27 20:11:44,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:44,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-27 20:11:44,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:44,750 INFO L124 PetriNetUnfolderBase]: 2309/4200 cut-off events. [2024-11-27 20:11:44,751 INFO L125 PetriNetUnfolderBase]: For 1803/1943 co-relation queries the response was YES. [2024-11-27 20:11:44,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9922 conditions, 4200 events. 2309/4200 cut-off events. For 1803/1943 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 26266 event pairs, 1862 based on Foata normal form. 1/3839 useless extension candidates. Maximal degree in co-relation 9900. Up to 3353 conditions per place. [2024-11-27 20:11:44,785 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 57 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-11-27 20:11:44,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 574 flow [2024-11-27 20:11:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-27 20:11:44,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714 [2024-11-27 20:11:44,787 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 438 flow. Second operand 4 states and 111 transitions. [2024-11-27 20:11:44,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 574 flow [2024-11-27 20:11:44,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:44,794 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 453 flow [2024-11-27 20:11:44,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-11-27 20:11:44,796 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-27 20:11:44,797 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 453 flow [2024-11-27 20:11:44,797 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) [2024-11-27 20:11:44,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:44,797 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:44,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:11:45,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:11:45,003 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:45,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash 686175718, now seen corresponding path program 1 times [2024-11-27 20:11:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:45,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382015275] [2024-11-27 20:11:45,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:45,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:45,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382015275] [2024-11-27 20:11:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382015275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:45,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679467577] [2024-11-27 20:11:45,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:45,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:45,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:45,251 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:45,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:11:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:45,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:11:45,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:45,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:45,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679467577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:45,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:45,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-27 20:11:45,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26576269] [2024-11-27 20:11:45,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:45,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:11:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:45,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:11:45,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:11:45,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-27 20:11:45,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 453 flow. Second operand has 15 states, 15 states have (on average 20.866666666666667) internal successors, (313), 15 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:45,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:45,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-27 20:11:45,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:47,222 INFO L124 PetriNetUnfolderBase]: 3826/7073 cut-off events. [2024-11-27 20:11:47,223 INFO L125 PetriNetUnfolderBase]: For 3090/3230 co-relation queries the response was YES. [2024-11-27 20:11:47,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16551 conditions, 7073 events. 3826/7073 cut-off events. For 3090/3230 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 49474 event pairs, 2556 based on Foata normal form. 232/6674 useless extension candidates. Maximal degree in co-relation 16528. Up to 3245 conditions per place. [2024-11-27 20:11:47,277 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 77 selfloop transitions, 48 changer transitions 15/156 dead transitions. [2024-11-27 20:11:47,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 1009 flow [2024-11-27 20:11:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:11:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 20:11:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 422 transitions. [2024-11-27 20:11:47,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3546218487394958 [2024-11-27 20:11:47,281 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 453 flow. Second operand 17 states and 422 transitions. [2024-11-27 20:11:47,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 1009 flow [2024-11-27 20:11:47,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 977 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:47,290 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 677 flow [2024-11-27 20:11:47,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=677, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-11-27 20:11:47,291 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 35 predicate places. [2024-11-27 20:11:47,291 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 677 flow [2024-11-27 20:11:47,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.866666666666667) internal successors, (313), 15 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:47,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:47,292 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-27 20:11:47,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:11:47,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:11:47,496 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:47,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:47,497 INFO L85 PathProgramCache]: Analyzing trace with hash -921827678, now seen corresponding path program 1 times [2024-11-27 20:11:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791268484] [2024-11-27 20:11:47,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:47,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:47,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791268484] [2024-11-27 20:11:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791268484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119637171] [2024-11-27 20:11:47,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:47,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:47,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:47,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:47,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:11:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:47,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:11:47,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:48,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119637171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:48,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:48,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 20:11:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709831841] [2024-11-27 20:11:48,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:48,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:11:48,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:48,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:11:48,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:11:48,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-27 20:11:48,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 677 flow. Second operand has 24 states, 24 states have (on average 20.083333333333332) internal successors, (482), 24 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:48,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:48,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-27 20:11:48,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:49,682 INFO L124 PetriNetUnfolderBase]: 3560/6679 cut-off events. [2024-11-27 20:11:49,682 INFO L125 PetriNetUnfolderBase]: For 4135/4195 co-relation queries the response was YES. [2024-11-27 20:11:49,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16117 conditions, 6679 events. 3560/6679 cut-off events. For 4135/4195 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 47844 event pairs, 2940 based on Foata normal form. 18/6054 useless extension candidates. Maximal degree in co-relation 16089. Up to 5141 conditions per place. [2024-11-27 20:11:49,722 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 46 selfloop transitions, 110 changer transitions 0/172 dead transitions. [2024-11-27 20:11:49,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 172 transitions, 1571 flow [2024-11-27 20:11:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:11:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-27 20:11:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 518 transitions. [2024-11-27 20:11:49,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-11-27 20:11:49,727 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 677 flow. Second operand 22 states and 518 transitions. [2024-11-27 20:11:49,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 172 transitions, 1571 flow [2024-11-27 20:11:49,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 172 transitions, 1453 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:49,743 INFO L231 Difference]: Finished difference. Result has 124 places, 172 transitions, 1441 flow [2024-11-27 20:11:49,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1441, PETRI_PLACES=124, PETRI_TRANSITIONS=172} [2024-11-27 20:11:49,744 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2024-11-27 20:11:49,744 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 172 transitions, 1441 flow [2024-11-27 20:11:49,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 20.083333333333332) internal successors, (482), 24 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:49,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:49,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:49,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:49,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:11:49,949 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:49,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1729203165, now seen corresponding path program 1 times [2024-11-27 20:11:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704619912] [2024-11-27 20:11:49,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:49,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:50,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704619912] [2024-11-27 20:11:50,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704619912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:50,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394003477] [2024-11-27 20:11:50,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:50,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:50,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:50,194 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:50,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:11:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:50,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:11:50,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:50,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:11:50,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394003477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:50,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:11:50,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-27 20:11:50,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051568081] [2024-11-27 20:11:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:50,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:11:50,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:50,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:11:50,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:11:50,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-27 20:11:50,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 172 transitions, 1441 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:50,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:50,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-27 20:11:50,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:51,030 INFO L124 PetriNetUnfolderBase]: 2644/5189 cut-off events. [2024-11-27 20:11:51,030 INFO L125 PetriNetUnfolderBase]: For 3208/3248 co-relation queries the response was YES. [2024-11-27 20:11:51,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12340 conditions, 5189 events. 2644/5189 cut-off events. For 3208/3248 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 37190 event pairs, 2140 based on Foata normal form. 266/5024 useless extension candidates. Maximal degree in co-relation 12305. Up to 3921 conditions per place. [2024-11-27 20:11:51,072 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 152 selfloop transitions, 1 changer transitions 0/170 dead transitions. [2024-11-27 20:11:51,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 1739 flow [2024-11-27 20:11:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:11:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:11:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-27 20:11:51,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-27 20:11:51,074 INFO L175 Difference]: Start difference. First operand has 124 places, 172 transitions, 1441 flow. Second operand 3 states and 102 transitions. [2024-11-27 20:11:51,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 1739 flow [2024-11-27 20:11:51,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 170 transitions, 1410 flow, removed 104 selfloop flow, removed 10 redundant places. [2024-11-27 20:11:51,091 INFO L231 Difference]: Finished difference. Result has 114 places, 170 transitions, 1106 flow [2024-11-27 20:11:51,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=114, PETRI_TRANSITIONS=170} [2024-11-27 20:11:51,093 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 48 predicate places. [2024-11-27 20:11:51,093 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 170 transitions, 1106 flow [2024-11-27 20:11:51,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:51,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:51,093 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:51,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:11:51,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:11:51,294 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:51,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2065689692, now seen corresponding path program 1 times [2024-11-27 20:11:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:51,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234564607] [2024-11-27 20:11:51,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:52,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:52,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234564607] [2024-11-27 20:11:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234564607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:52,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784449756] [2024-11-27 20:11:52,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:52,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:52,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:52,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:52,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:11:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:52,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:11:52,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:52,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:11:52,892 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:11:52,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-27 20:11:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:52,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:53,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:11:53,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-27 20:11:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:53,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784449756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:53,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-27 20:11:53,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123233614] [2024-11-27 20:11:53,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:53,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:11:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:53,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:11:53,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:11:53,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 70 [2024-11-27 20:11:53,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 170 transitions, 1106 flow. Second operand has 21 states, 21 states have (on average 17.0) internal successors, (357), 21 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:53,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:53,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 70 [2024-11-27 20:11:53,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:59,208 INFO L124 PetriNetUnfolderBase]: 14704/24597 cut-off events. [2024-11-27 20:11:59,208 INFO L125 PetriNetUnfolderBase]: For 11811/12317 co-relation queries the response was YES. [2024-11-27 20:11:59,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58365 conditions, 24597 events. 14704/24597 cut-off events. For 11811/12317 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 192781 event pairs, 6076 based on Foata normal form. 0/22150 useless extension candidates. Maximal degree in co-relation 58331. Up to 4410 conditions per place. [2024-11-27 20:11:59,532 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 277 selfloop transitions, 116 changer transitions 6/411 dead transitions. [2024-11-27 20:11:59,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 411 transitions, 2798 flow [2024-11-27 20:11:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:11:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:11:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 512 transitions. [2024-11-27 20:11:59,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40634920634920635 [2024-11-27 20:11:59,534 INFO L175 Difference]: Start difference. First operand has 114 places, 170 transitions, 1106 flow. Second operand 18 states and 512 transitions. [2024-11-27 20:11:59,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 411 transitions, 2798 flow [2024-11-27 20:11:59,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 411 transitions, 2797 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:59,558 INFO L231 Difference]: Finished difference. Result has 135 places, 185 transitions, 1423 flow [2024-11-27 20:11:59,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1423, PETRI_PLACES=135, PETRI_TRANSITIONS=185} [2024-11-27 20:11:59,559 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 69 predicate places. [2024-11-27 20:11:59,559 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 185 transitions, 1423 flow [2024-11-27 20:11:59,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.0) internal successors, (357), 21 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:59,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:59,560 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:59,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:59,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:11:59,764 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:11:59,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1545620234, now seen corresponding path program 2 times [2024-11-27 20:11:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195971940] [2024-11-27 20:11:59,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:59,795 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:11:59,796 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:11:59,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:59,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195971940] [2024-11-27 20:11:59,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195971940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:59,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627697072] [2024-11-27 20:11:59,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:59,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:59,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:59,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:59,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:12:00,018 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:12:00,019 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:00,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:12:00,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:12:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:12:00,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:12:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627697072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:00,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:12:00,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-27 20:12:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82837026] [2024-11-27 20:12:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:00,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:12:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:00,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:12:00,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:12:00,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-11-27 20:12:00,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 185 transitions, 1423 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:00,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:00,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-11-27 20:12:00,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:02,469 INFO L124 PetriNetUnfolderBase]: 10778/19294 cut-off events. [2024-11-27 20:12:02,469 INFO L125 PetriNetUnfolderBase]: For 17152/17486 co-relation queries the response was YES. [2024-11-27 20:12:02,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50818 conditions, 19294 events. 10778/19294 cut-off events. For 17152/17486 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 156857 event pairs, 3634 based on Foata normal form. 266/18196 useless extension candidates. Maximal degree in co-relation 50779. Up to 5828 conditions per place. [2024-11-27 20:12:02,789 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 211 selfloop transitions, 7 changer transitions 0/236 dead transitions. [2024-11-27 20:12:02,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 236 transitions, 2117 flow [2024-11-27 20:12:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:12:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:12:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-27 20:12:02,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-11-27 20:12:02,791 INFO L175 Difference]: Start difference. First operand has 135 places, 185 transitions, 1423 flow. Second operand 4 states and 142 transitions. [2024-11-27 20:12:02,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 236 transitions, 2117 flow [2024-11-27 20:12:02,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 236 transitions, 2059 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-27 20:12:02,927 INFO L231 Difference]: Finished difference. Result has 133 places, 184 transitions, 1387 flow [2024-11-27 20:12:02,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1387, PETRI_PLACES=133, PETRI_TRANSITIONS=184} [2024-11-27 20:12:02,928 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 67 predicate places. [2024-11-27 20:12:02,928 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 184 transitions, 1387 flow [2024-11-27 20:12:02,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:02,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:02,929 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:02,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:12:03,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:12:03,129 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:12:03,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash -897712929, now seen corresponding path program 1 times [2024-11-27 20:12:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32724924] [2024-11-27 20:12:03,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:03,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:03,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32724924] [2024-11-27 20:12:03,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32724924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:12:03,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257020889] [2024-11-27 20:12:03,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:03,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:12:03,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:03,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:12:03,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:12:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:04,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:12:04,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:12:04,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:12:04,499 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:12:04,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:12:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:04,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:12:05,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 20:12:05,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-27 20:12:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:05,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257020889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:12:05,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:12:05,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-27 20:12:05,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916590829] [2024-11-27 20:12:05,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:12:05,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:12:05,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:05,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:12:05,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:12:05,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 70 [2024-11-27 20:12:05,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 184 transitions, 1387 flow. Second operand has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:05,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:05,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 70 [2024-11-27 20:12:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:12,262 INFO L124 PetriNetUnfolderBase]: 14014/24229 cut-off events. [2024-11-27 20:12:12,262 INFO L125 PetriNetUnfolderBase]: For 28128/28502 co-relation queries the response was YES. [2024-11-27 20:12:12,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68113 conditions, 24229 events. 14014/24229 cut-off events. For 28128/28502 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 198430 event pairs, 5992 based on Foata normal form. 548/23905 useless extension candidates. Maximal degree in co-relation 68075. Up to 5668 conditions per place. [2024-11-27 20:12:12,453 INFO L140 encePairwiseOnDemand]: 55/70 looper letters, 354 selfloop transitions, 135 changer transitions 6/511 dead transitions. [2024-11-27 20:12:12,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 511 transitions, 3815 flow [2024-11-27 20:12:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-27 20:12:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-27 20:12:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1042 transitions. [2024-11-27 20:12:12,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.354421768707483 [2024-11-27 20:12:12,460 INFO L175 Difference]: Start difference. First operand has 133 places, 184 transitions, 1387 flow. Second operand 42 states and 1042 transitions. [2024-11-27 20:12:12,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 511 transitions, 3815 flow [2024-11-27 20:12:12,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 511 transitions, 3621 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:12:12,672 INFO L231 Difference]: Finished difference. Result has 185 places, 211 transitions, 1911 flow [2024-11-27 20:12:12,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1911, PETRI_PLACES=185, PETRI_TRANSITIONS=211} [2024-11-27 20:12:12,673 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 119 predicate places. [2024-11-27 20:12:12,673 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 211 transitions, 1911 flow [2024-11-27 20:12:12,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:12,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:12,673 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:12,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:12:12,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:12:12,878 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:12:12,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash -669586139, now seen corresponding path program 1 times [2024-11-27 20:12:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:12,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100122244] [2024-11-27 20:12:12,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:12:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100122244] [2024-11-27 20:12:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100122244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:12:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791459823] [2024-11-27 20:12:13,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:13,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:12:13,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:13,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:12:13,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:12:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:13,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:12:13,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:12:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:12:13,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:12:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:12:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791459823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:12:13,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:12:13,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:12:13,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457500514] [2024-11-27 20:12:13,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:12:13,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:12:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:13,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:12:13,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:12:13,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-27 20:12:13,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 211 transitions, 1911 flow. Second operand has 12 states, 12 states have (on average 23.0) internal successors, (276), 12 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:13,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:13,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-27 20:12:13,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:18,413 INFO L124 PetriNetUnfolderBase]: 16536/29578 cut-off events. [2024-11-27 20:12:18,413 INFO L125 PetriNetUnfolderBase]: For 81006/81922 co-relation queries the response was YES. [2024-11-27 20:12:18,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92729 conditions, 29578 events. 16536/29578 cut-off events. For 81006/81922 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 244601 event pairs, 4193 based on Foata normal form. 0/28424 useless extension candidates. Maximal degree in co-relation 92676. Up to 10979 conditions per place. [2024-11-27 20:12:18,662 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 441 selfloop transitions, 13 changer transitions 0/475 dead transitions. [2024-11-27 20:12:18,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 475 transitions, 4521 flow [2024-11-27 20:12:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 373 transitions. [2024-11-27 20:12:18,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5328571428571428 [2024-11-27 20:12:18,871 INFO L175 Difference]: Start difference. First operand has 185 places, 211 transitions, 1911 flow. Second operand 10 states and 373 transitions. [2024-11-27 20:12:18,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 475 transitions, 4521 flow [2024-11-27 20:12:19,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 475 transitions, 4269 flow, removed 27 selfloop flow, removed 17 redundant places. [2024-11-27 20:12:19,157 INFO L231 Difference]: Finished difference. Result has 180 places, 220 transitions, 1783 flow [2024-11-27 20:12:19,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1783, PETRI_PLACES=180, PETRI_TRANSITIONS=220} [2024-11-27 20:12:19,158 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 114 predicate places. [2024-11-27 20:12:19,158 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 220 transitions, 1783 flow [2024-11-27 20:12:19,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.0) internal successors, (276), 12 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:19,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:19,159 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:19,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:12:19,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:12:19,359 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:12:19,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1561212008, now seen corresponding path program 1 times [2024-11-27 20:12:19,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:19,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437763019] [2024-11-27 20:12:19,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:19,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:12:21,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:21,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437763019] [2024-11-27 20:12:21,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437763019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:12:21,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285783328] [2024-11-27 20:12:21,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:21,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:12:21,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:21,074 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:12:21,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:12:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:21,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:12:21,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:12:21,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:12:21,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-27 20:12:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:21,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:12:22,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:12:22,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-27 20:12:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285783328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:12:22,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:12:22,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 28 [2024-11-27 20:12:22,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859552104] [2024-11-27 20:12:22,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:12:22,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 20:12:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:22,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 20:12:22,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:12:23,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-11-27 20:12:23,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 220 transitions, 1783 flow. Second operand has 29 states, 29 states have (on average 16.06896551724138) internal successors, (466), 29 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:23,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:23,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-11-27 20:12:23,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:40,843 INFO L124 PetriNetUnfolderBase]: 48231/75944 cut-off events. [2024-11-27 20:12:40,843 INFO L125 PetriNetUnfolderBase]: For 229054/231516 co-relation queries the response was YES. [2024-11-27 20:12:41,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256111 conditions, 75944 events. 48231/75944 cut-off events. For 229054/231516 co-relation queries the response was YES. Maximal size of possible extension queue 2107. Compared 604637 event pairs, 8329 based on Foata normal form. 0/72733 useless extension candidates. Maximal degree in co-relation 256058. Up to 14920 conditions per place. [2024-11-27 20:12:41,502 INFO L140 encePairwiseOnDemand]: 53/70 looper letters, 635 selfloop transitions, 171 changer transitions 18/840 dead transitions. [2024-11-27 20:12:41,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 840 transitions, 7111 flow [2024-11-27 20:12:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-27 20:12:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-27 20:12:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1095 transitions. [2024-11-27 20:12:41,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33282674772036475 [2024-11-27 20:12:41,506 INFO L175 Difference]: Start difference. First operand has 180 places, 220 transitions, 1783 flow. Second operand 47 states and 1095 transitions. [2024-11-27 20:12:41,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 840 transitions, 7111 flow [2024-11-27 20:12:42,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 840 transitions, 6579 flow, removed 196 selfloop flow, removed 3 redundant places. [2024-11-27 20:12:42,947 INFO L231 Difference]: Finished difference. Result has 237 places, 288 transitions, 2800 flow [2024-11-27 20:12:42,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2800, PETRI_PLACES=237, PETRI_TRANSITIONS=288} [2024-11-27 20:12:42,949 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 171 predicate places. [2024-11-27 20:12:42,949 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 288 transitions, 2800 flow [2024-11-27 20:12:42,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 16.06896551724138) internal successors, (466), 29 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:42,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:42,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:42,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:12:43,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:12:43,150 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:12:43,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1876838662, now seen corresponding path program 1 times [2024-11-27 20:12:43,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:43,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611826709] [2024-11-27 20:12:43,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:44,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:44,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611826709] [2024-11-27 20:12:44,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611826709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:12:44,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766663305] [2024-11-27 20:12:44,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:44,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:12:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:44,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:12:44,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:12:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:44,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:12:44,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:12:44,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:12:44,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:12:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:44,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:12:45,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 20:12:45,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-27 20:12:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:12:45,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766663305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:12:45,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:12:45,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-27 20:12:45,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052911078] [2024-11-27 20:12:45,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:12:45,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:12:45,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:45,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:12:45,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:12:45,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 70 [2024-11-27 20:12:45,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 288 transitions, 2800 flow. Second operand has 24 states, 24 states have (on average 18.375) internal successors, (441), 24 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:45,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:45,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 70 [2024-11-27 20:12:45,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:00,590 INFO L124 PetriNetUnfolderBase]: 38179/65236 cut-off events. [2024-11-27 20:13:00,590 INFO L125 PetriNetUnfolderBase]: For 422750/424884 co-relation queries the response was YES. [2024-11-27 20:13:01,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260598 conditions, 65236 events. 38179/65236 cut-off events. For 422750/424884 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 570753 event pairs, 6703 based on Foata normal form. 1614/65405 useless extension candidates. Maximal degree in co-relation 260530. Up to 12686 conditions per place. [2024-11-27 20:13:01,304 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 629 selfloop transitions, 184 changer transitions 18/851 dead transitions. [2024-11-27 20:13:01,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 851 transitions, 7702 flow [2024-11-27 20:13:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:13:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-27 20:13:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 773 transitions. [2024-11-27 20:13:01,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.408994708994709 [2024-11-27 20:13:01,307 INFO L175 Difference]: Start difference. First operand has 237 places, 288 transitions, 2800 flow. Second operand 27 states and 773 transitions. [2024-11-27 20:13:01,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 851 transitions, 7702 flow [2024-11-27 20:13:05,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 851 transitions, 7406 flow, removed 88 selfloop flow, removed 18 redundant places. [2024-11-27 20:13:05,829 INFO L231 Difference]: Finished difference. Result has 253 places, 316 transitions, 3293 flow [2024-11-27 20:13:05,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3293, PETRI_PLACES=253, PETRI_TRANSITIONS=316} [2024-11-27 20:13:05,830 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 187 predicate places. [2024-11-27 20:13:05,830 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 316 transitions, 3293 flow [2024-11-27 20:13:05,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.375) internal successors, (441), 24 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:05,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:05,831 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:05,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:13:06,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45641eec-5ccb-43e4-9bfb-48b1c0874065/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:06,031 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:13:06,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:06,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1018664509, now seen corresponding path program 1 times [2024-11-27 20:13:06,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:06,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793859697] [2024-11-27 20:13:06,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:06,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:13:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793859697] [2024-11-27 20:13:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793859697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:06,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:06,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958195813] [2024-11-27 20:13:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:06,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:06,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:06,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:06,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-27 20:13:06,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 316 transitions, 3293 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:06,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:06,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-27 20:13:06,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand