./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --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_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/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_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/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_2ceabfae-f563-41b8-90ba-be158b266cfe/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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:09:47,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:09:47,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 05:09:47,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:09:47,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:09:47,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:09:47,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:09:47,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:09:47,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:09:47,713 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:09:47,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:09:47,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:09:47,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:09:47,715 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:09:47,715 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:09:47,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:09:47,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:09:47,716 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:09:47,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:09:47,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:09:47,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:09:47,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:09:47,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:09:47,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:09:47,717 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:09:47,717 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:09:47,717 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:09:47,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:09:47,717 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:09:47,717 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:09:47,717 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:09:47,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:47,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:47,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:47,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:47,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:09:47,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:47,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:47,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:47,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:09:47,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:09:47,720 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:09:47,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:09:47,720 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_2ceabfae-f563-41b8-90ba-be158b266cfe/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 -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-11-28 05:09:48,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:09:48,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:09:48,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:09:48,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:09:48,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:09:48,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-28 05:09:51,800 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/data/d7faaa44f/be032de004314b4cbd27e6c5630f26d6/FLAG59894a671 [2024-11-28 05:09:52,389 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:09:52,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-28 05:09:52,418 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/data/d7faaa44f/be032de004314b4cbd27e6c5630f26d6/FLAG59894a671 [2024-11-28 05:09:52,447 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/data/d7faaa44f/be032de004314b4cbd27e6c5630f26d6 [2024-11-28 05:09:52,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:09:52,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:09:52,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:52,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:09:52,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:09:52,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:52" (1/1) ... [2024-11-28 05:09:52,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c362264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:52, skipping insertion in model container [2024-11-28 05:09:52,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:52" (1/1) ... [2024-11-28 05:09:52,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:53,196 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,198 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,198 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,199 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:53,272 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:09:53,347 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,348 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,348 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,349 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 05:09:53,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:53,484 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:09:53,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53 WrapperNode [2024-11-28 05:09:53,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:53,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:53,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:09:53,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:09:53,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,557 INFO L138 Inliner]: procedures = 273, calls = 95, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 187 [2024-11-28 05:09:53,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:53,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:09:53,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:09:53,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:09:53,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,601 INFO L175 MemorySlicer]: Split 84 memory accesses to 1 slices as follows [84]. 100 percent of accesses are in the largest equivalence class. The 70 initializations are split as follows [70]. The 10 writes are split as follows [10]. [2024-11-28 05:09:53,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,616 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:09:53,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:09:53,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:09:53,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:09:53,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (1/1) ... [2024-11-28 05:09:53,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:53,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:53,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:09:53,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:09:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 05:09:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 05:09:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:09:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:09:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:09:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:09:53,725 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:09:53,915 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:09:53,918 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:09:54,701 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:09:54,702 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:09:55,695 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:09:55,696 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 05:09:55,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:55 BoogieIcfgContainer [2024-11-28 05:09:55,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:09:55,701 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:09:55,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:09:55,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:09:55,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:09:52" (1/3) ... [2024-11-28 05:09:55,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226d0417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:55, skipping insertion in model container [2024-11-28 05:09:55,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:53" (2/3) ... [2024-11-28 05:09:55,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226d0417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:55, skipping insertion in model container [2024-11-28 05:09:55,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:55" (3/3) ... [2024-11-28 05:09:55,717 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2024-11-28 05:09:55,738 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:09:55,742 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_21-arrayloop2_nr.i that has 2 procedures, 36 locations, 1 initial locations, 4 loop locations, and 10 error locations. [2024-11-28 05:09:55,743 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:09:55,855 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:09:55,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 122 flow [2024-11-28 05:09:56,000 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-11-28 05:09:56,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:09:56,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 6/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-28 05:09:56,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 122 flow [2024-11-28 05:09:56,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 116 flow [2024-11-28 05:09:56,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:09:56,061 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;@3f90fb46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:09:56,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-28 05:09:56,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:09:56,079 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-11-28 05:09:56,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:09:56,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:56,080 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:09:56,081 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:09:56,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:56,090 INFO L85 PathProgramCache]: Analyzing trace with hash 15468405, now seen corresponding path program 1 times [2024-11-28 05:09:56,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646120273] [2024-11-28 05:09:56,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:09:56,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311539993] [2024-11-28 05:09:56,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:56,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:56,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:56,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:56,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:09:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:56,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:09:56,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:56,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:56,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:56,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646120273] [2024-11-28 05:09:56,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:09:56,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311539993] [2024-11-28 05:09:56,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311539993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:56,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:56,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:09:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959228481] [2024-11-28 05:09:56,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:56,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:09:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:56,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:09:56,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:09:56,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-11-28 05:09:56,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:56,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:56,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-11-28 05:09:56,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:57,486 INFO L124 PetriNetUnfolderBase]: 303/700 cut-off events. [2024-11-28 05:09:57,487 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 05:09:57,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 700 events. 303/700 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3663 event pairs, 224 based on Foata normal form. 1/590 useless extension candidates. Maximal degree in co-relation 1166. Up to 490 conditions per place. [2024-11-28 05:09:57,503 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-28 05:09:57,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 202 flow [2024-11-28 05:09:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:09:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:09:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-28 05:09:57,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-11-28 05:09:57,528 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 116 flow. Second operand 3 states and 113 transitions. [2024-11-28 05:09:57,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 202 flow [2024-11-28 05:09:57,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:57,544 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2024-11-28 05:09:57,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-11-28 05:09:57,552 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-11-28 05:09:57,552 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2024-11-28 05:09:57,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:57,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:57,553 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:09:57,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:57,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:09:57,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:09:57,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash 15468451, now seen corresponding path program 1 times [2024-11-28 05:09:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:57,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979550777] [2024-11-28 05:09:57,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:58,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979550777] [2024-11-28 05:09:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979550777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:58,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396061198] [2024-11-28 05:09:58,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:58,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:09:58,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:58,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:09:58,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:09:58,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-11-28 05:09:58,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:58,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:58,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-11-28 05:09:58,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:58,674 INFO L124 PetriNetUnfolderBase]: 303/714 cut-off events. [2024-11-28 05:09:58,675 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 05:09:58,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 714 events. 303/714 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3766 event pairs, 224 based on Foata normal form. 4/607 useless extension candidates. Maximal degree in co-relation 1207. Up to 495 conditions per place. [2024-11-28 05:09:58,687 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-28 05:09:58,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 206 flow [2024-11-28 05:09:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:09:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:09:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-28 05:09:58,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2024-11-28 05:09:58,692 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 110 transitions. [2024-11-28 05:09:58,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 206 flow [2024-11-28 05:09:58,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:09:58,696 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 144 flow [2024-11-28 05:09:58,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-11-28 05:09:58,698 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-11-28 05:09:58,699 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 144 flow [2024-11-28 05:09:58,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:58,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:58,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:09:58,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:09:58,701 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:09:58,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1980250586, now seen corresponding path program 1 times [2024-11-28 05:09:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009626844] [2024-11-28 05:09:58,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:58,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:59,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009626844] [2024-11-28 05:09:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009626844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:59,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:59,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:59,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899115483] [2024-11-28 05:09:59,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:59,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:59,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:59,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:59,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:59,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-28 05:09:59,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:59,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:59,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-28 05:09:59,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:59,855 INFO L124 PetriNetUnfolderBase]: 303/710 cut-off events. [2024-11-28 05:09:59,855 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-28 05:09:59,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 710 events. 303/710 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3756 event pairs, 224 based on Foata normal form. 4/607 useless extension candidates. Maximal degree in co-relation 1194. Up to 499 conditions per place. [2024-11-28 05:09:59,872 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 35 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-28 05:09:59,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 222 flow [2024-11-28 05:09:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-28 05:09:59,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-11-28 05:09:59,878 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 144 flow. Second operand 4 states and 127 transitions. [2024-11-28 05:09:59,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 222 flow [2024-11-28 05:09:59,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:09:59,882 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 160 flow [2024-11-28 05:09:59,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-11-28 05:09:59,885 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-28 05:09:59,885 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 160 flow [2024-11-28 05:09:59,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:59,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:59,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:59,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:09:59,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:09:59,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:59,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2025063688, now seen corresponding path program 1 times [2024-11-28 05:09:59,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:59,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164578093] [2024-11-28 05:09:59,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:59,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:00,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:00,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164578093] [2024-11-28 05:10:00,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164578093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:00,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001093402] [2024-11-28 05:10:00,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:00,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:00,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:00,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:00,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:10:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:00,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:10:00,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:00,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:00,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001093402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:00,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 05:10:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069536621] [2024-11-28 05:10:00,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:00,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:10:00,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:00,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:10:00,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:10:00,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-28 05:10:00,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:00,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:00,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-28 05:10:00,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:01,899 INFO L124 PetriNetUnfolderBase]: 303/726 cut-off events. [2024-11-28 05:10:01,899 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-28 05:10:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 726 events. 303/726 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3851 event pairs, 224 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 1213. Up to 489 conditions per place. [2024-11-28 05:10:01,906 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 38 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-11-28 05:10:01,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 284 flow [2024-11-28 05:10:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:10:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:10:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-11-28 05:10:01,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46393762183235865 [2024-11-28 05:10:01,909 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 160 flow. Second operand 9 states and 238 transitions. [2024-11-28 05:10:01,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 284 flow [2024-11-28 05:10:01,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:10:01,913 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 210 flow [2024-11-28 05:10:01,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-28 05:10:01,914 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-28 05:10:01,915 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 210 flow [2024-11-28 05:10:01,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:01,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:01,915 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 05:10:01,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:02,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:02,120 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:02,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash -466048017, now seen corresponding path program 1 times [2024-11-28 05:10:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:02,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137826486] [2024-11-28 05:10:02,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:02,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:02,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137826486] [2024-11-28 05:10:02,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137826486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:02,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786007035] [2024-11-28 05:10:02,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:02,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:02,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:02,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:02,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:10:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:02,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:10:02,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:02,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:02,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786007035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:02,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:10:02,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 05:10:02,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718378858] [2024-11-28 05:10:02,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:02,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:02,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:02,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:02,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:10:02,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-28 05:10:02,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:02,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:02,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-28 05:10:02,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:03,683 INFO L124 PetriNetUnfolderBase]: 303/722 cut-off events. [2024-11-28 05:10:03,683 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-28 05:10:03,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 722 events. 303/722 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3815 event pairs, 224 based on Foata normal form. 4/619 useless extension candidates. Maximal degree in co-relation 1230. Up to 487 conditions per place. [2024-11-28 05:10:03,690 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 31 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-11-28 05:10:03,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 274 flow [2024-11-28 05:10:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:10:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-28 05:10:03,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-28 05:10:03,695 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 210 flow. Second operand 6 states and 169 transitions. [2024-11-28 05:10:03,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 274 flow [2024-11-28 05:10:03,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 266 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 05:10:03,702 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 204 flow [2024-11-28 05:10:03,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-11-28 05:10:03,705 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-28 05:10:03,706 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 204 flow [2024-11-28 05:10:03,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:03,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:03,707 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2024-11-28 05:10:03,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:10:03,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:03,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:03,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1974295995, now seen corresponding path program 1 times [2024-11-28 05:10:03,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:03,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918733060] [2024-11-28 05:10:03,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:03,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:10:04,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:04,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918733060] [2024-11-28 05:10:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918733060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:04,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:04,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:10:04,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933100504] [2024-11-28 05:10:04,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:04,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:10:04,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:04,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:10:04,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:04,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-11-28 05:10:04,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:04,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:04,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-11-28 05:10:04,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:04,620 INFO L124 PetriNetUnfolderBase]: 303/720 cut-off events. [2024-11-28 05:10:04,620 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-28 05:10:04,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 720 events. 303/720 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3805 event pairs, 224 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 1236. Up to 493 conditions per place. [2024-11-28 05:10:04,629 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-11-28 05:10:04,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 280 flow [2024-11-28 05:10:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:10:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:10:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-28 05:10:04,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-28 05:10:04,631 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 204 flow. Second operand 4 states and 126 transitions. [2024-11-28 05:10:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 280 flow [2024-11-28 05:10:04,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 60 transitions, 264 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-28 05:10:04,638 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 212 flow [2024-11-28 05:10:04,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-28 05:10:04,639 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-11-28 05:10:04,641 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 212 flow [2024-11-28 05:10:04,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:04,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:04,641 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-11-28 05:10:04,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:10:04,642 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:04,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1077109208, now seen corresponding path program 2 times [2024-11-28 05:10:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:04,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094349262] [2024-11-28 05:10:04,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:10:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:04,760 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:10:04,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 05:10:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094349262] [2024-11-28 05:10:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094349262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:04,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:04,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:10:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712078324] [2024-11-28 05:10:04,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:04,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:10:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:04,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:10:04,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:04,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-28 05:10:04,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 212 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) [2024-11-28 05:10:04,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:04,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-28 05:10:04,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:05,544 INFO L124 PetriNetUnfolderBase]: 303/718 cut-off events. [2024-11-28 05:10:05,544 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-28 05:10:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 718 events. 303/718 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3807 event pairs, 224 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 1218. Up to 498 conditions per place. [2024-11-28 05:10:05,551 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 45 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-28 05:10:05,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 380 flow [2024-11-28 05:10:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:10:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:10:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-28 05:10:05,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-11-28 05:10:05,553 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 212 flow. Second operand 4 states and 130 transitions. [2024-11-28 05:10:05,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 380 flow [2024-11-28 05:10:05,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 356 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:10:05,557 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 223 flow [2024-11-28 05:10:05,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-28 05:10:05,558 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-28 05:10:05,558 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 223 flow [2024-11-28 05:10:05,559 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) [2024-11-28 05:10:05,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:05,559 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-28 05:10:05,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:10:05,559 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:05,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:05,560 INFO L85 PathProgramCache]: Analyzing trace with hash -587792147, now seen corresponding path program 1 times [2024-11-28 05:10:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284945961] [2024-11-28 05:10:05,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:06,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:06,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284945961] [2024-11-28 05:10:06,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284945961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568121684] [2024-11-28 05:10:06,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:06,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:06,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:06,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:06,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:10:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:06,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:10:06,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:06,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:06,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568121684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:06,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:06,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-28 05:10:06,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071045030] [2024-11-28 05:10:06,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:06,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:10:06,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:06,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:10:06,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:10:06,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-28 05:10:06,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 223 flow. Second operand has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:06,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:06,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-28 05:10:06,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:08,558 INFO L124 PetriNetUnfolderBase]: 303/766 cut-off events. [2024-11-28 05:10:08,558 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-11-28 05:10:08,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 766 events. 303/766 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3836 event pairs, 224 based on Foata normal form. 8/669 useless extension candidates. Maximal degree in co-relation 1359. Up to 489 conditions per place. [2024-11-28 05:10:08,565 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 50 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-11-28 05:10:08,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 515 flow [2024-11-28 05:10:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:10:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:10:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 382 transitions. [2024-11-28 05:10:08,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2024-11-28 05:10:08,568 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 223 flow. Second operand 15 states and 382 transitions. [2024-11-28 05:10:08,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 515 flow [2024-11-28 05:10:08,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:10:08,576 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 353 flow [2024-11-28 05:10:08,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=353, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-11-28 05:10:08,577 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-11-28 05:10:08,578 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 353 flow [2024-11-28 05:10:08,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:08,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:08,579 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2024-11-28 05:10:08,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:10:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 05:10:08,783 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:08,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1168503597, now seen corresponding path program 2 times [2024-11-28 05:10:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062180299] [2024-11-28 05:10:08,784 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:10:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:09,026 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:10:09,026 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:10,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062180299] [2024-11-28 05:10:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062180299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551198861] [2024-11-28 05:10:10,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:10:10,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:10,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:10,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:10,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:10:10,758 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:10:10,758 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:10,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:10:10,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:10,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:11,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551198861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:11,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:11,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-11-28 05:10:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9625938] [2024-11-28 05:10:11,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:11,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 05:10:11,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:11,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 05:10:11,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 05:10:11,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-28 05:10:11,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 353 flow. Second operand has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:11,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:11,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-28 05:10:11,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:15,696 INFO L124 PetriNetUnfolderBase]: 303/862 cut-off events. [2024-11-28 05:10:15,696 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-11-28 05:10:15,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 862 events. 303/862 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3888 event pairs, 224 based on Foata normal form. 16/773 useless extension candidates. Maximal degree in co-relation 1625. Up to 489 conditions per place. [2024-11-28 05:10:15,704 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 74 selfloop transitions, 31 changer transitions 0/124 dead transitions. [2024-11-28 05:10:15,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 1027 flow [2024-11-28 05:10:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 05:10:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-28 05:10:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 762 transitions. [2024-11-28 05:10:15,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4312393887945671 [2024-11-28 05:10:15,713 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 353 flow. Second operand 31 states and 762 transitions. [2024-11-28 05:10:15,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 1027 flow [2024-11-28 05:10:15,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 993 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-28 05:10:15,727 INFO L231 Difference]: Finished difference. Result has 125 places, 87 transitions, 625 flow [2024-11-28 05:10:15,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=625, PETRI_PLACES=125, PETRI_TRANSITIONS=87} [2024-11-28 05:10:15,728 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-11-28 05:10:15,729 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 87 transitions, 625 flow [2024-11-28 05:10:15,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:15,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:15,731 INFO L206 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2024-11-28 05:10:15,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:15,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 05:10:15,932 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:15,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2097477549, now seen corresponding path program 3 times [2024-11-28 05:10:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448378730] [2024-11-28 05:10:15,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:10:15,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:27,405 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-28 05:10:27,405 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:30,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:30,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448378730] [2024-11-28 05:10:30,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448378730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:30,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267540675] [2024-11-28 05:10:30,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:10:30,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:30,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:30,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:30,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:10:31,092 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:10:31,093 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:31,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:10:31,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-28 05:10:31,590 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:31,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267540675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:31,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:10:31,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [33] total 40 [2024-11-28 05:10:31,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983439204] [2024-11-28 05:10:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:31,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:10:31,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:31,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:10:31,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1246, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 05:10:31,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-28 05:10:31,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 87 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:31,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:31,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-28 05:10:31,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:33,437 INFO L124 PetriNetUnfolderBase]: 303/847 cut-off events. [2024-11-28 05:10:33,438 INFO L125 PetriNetUnfolderBase]: For 1344/1344 co-relation queries the response was YES. [2024-11-28 05:10:33,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 847 events. 303/847 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3810 event pairs, 224 based on Foata normal form. 15/757 useless extension candidates. Maximal degree in co-relation 1610. Up to 482 conditions per place. [2024-11-28 05:10:33,446 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 63 selfloop transitions, 41 changer transitions 0/121 dead transitions. [2024-11-28 05:10:33,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 121 transitions, 1252 flow [2024-11-28 05:10:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:10:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:10:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-11-28 05:10:33,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.405103668261563 [2024-11-28 05:10:33,449 INFO L175 Difference]: Start difference. First operand has 125 places, 87 transitions, 625 flow. Second operand 11 states and 254 transitions. [2024-11-28 05:10:33,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 121 transitions, 1252 flow [2024-11-28 05:10:33,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 1200 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-28 05:10:33,470 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 1214 flow [2024-11-28 05:10:33,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2024-11-28 05:10:33,472 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-11-28 05:10:33,474 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 1214 flow [2024-11-28 05:10:33,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:33,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:33,475 INFO L206 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:33,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:10:33,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:10:33,676 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:33,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1677977084, now seen corresponding path program 1 times [2024-11-28 05:10:33,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216520343] [2024-11-28 05:10:33,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:33,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-28 05:10:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216520343] [2024-11-28 05:10:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216520343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570086840] [2024-11-28 05:10:34,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:34,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:34,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:34,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:10:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:35,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 05:10:35,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:36,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:38,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570086840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:38,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:38,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 33, 33] total 64 [2024-11-28 05:10:38,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452177112] [2024-11-28 05:10:38,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:38,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 05:10:38,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:38,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 05:10:38,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=3065, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 05:10:38,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-28 05:10:38,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 1214 flow. Second operand has 64 states, 64 states have (on average 20.671875) internal successors, (1323), 64 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:38,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:38,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-28 05:10:38,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:51,183 INFO L124 PetriNetUnfolderBase]: 319/1197 cut-off events. [2024-11-28 05:10:51,183 INFO L125 PetriNetUnfolderBase]: For 9765/9765 co-relation queries the response was YES. [2024-11-28 05:10:51,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 1197 events. 319/1197 cut-off events. For 9765/9765 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3855 event pairs, 224 based on Foata normal form. 46/1138 useless extension candidates. Maximal degree in co-relation 3293. Up to 487 conditions per place. [2024-11-28 05:10:51,193 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 152 selfloop transitions, 216 changer transitions 0/385 dead transitions. [2024-11-28 05:10:51,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 385 transitions, 5740 flow [2024-11-28 05:10:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2024-11-28 05:10:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2024-11-28 05:10:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 3872 transitions. [2024-11-28 05:10:51,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3732407942934259 [2024-11-28 05:10:51,211 INFO L175 Difference]: Start difference. First operand has 127 places, 120 transitions, 1214 flow. Second operand 182 states and 3872 transitions. [2024-11-28 05:10:51,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 385 transitions, 5740 flow [2024-11-28 05:10:51,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 385 transitions, 5718 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-28 05:10:51,258 INFO L231 Difference]: Finished difference. Result has 351 places, 274 transitions, 4082 flow [2024-11-28 05:10:51,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=182, PETRI_FLOW=4082, PETRI_PLACES=351, PETRI_TRANSITIONS=274} [2024-11-28 05:10:51,259 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 295 predicate places. [2024-11-28 05:10:51,260 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 274 transitions, 4082 flow [2024-11-28 05:10:51,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 20.671875) internal successors, (1323), 64 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:10:51,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:51,261 INFO L206 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2024-11-28 05:10:51,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:10:51,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:51,462 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:10:51,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash -276985989, now seen corresponding path program 1 times [2024-11-28 05:10:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756453213] [2024-11-28 05:10:51,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:12:26,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892045538] [2024-11-28 05:12:26,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:26,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:26,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:26,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:26,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:12:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:30,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 3142 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:12:30,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2024-11-28 05:12:30,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:30,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:30,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756453213] [2024-11-28 05:12:30,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:12:30,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892045538] [2024-11-28 05:12:30,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892045538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:30,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:30,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:12:30,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45715776] [2024-11-28 05:12:30,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:30,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:12:30,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:30,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:12:30,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:12:30,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-28 05:12:30,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 274 transitions, 4082 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:12:30,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:30,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-28 05:12:30,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:31,071 INFO L124 PetriNetUnfolderBase]: 304/1139 cut-off events. [2024-11-28 05:12:31,071 INFO L125 PetriNetUnfolderBase]: For 23676/23676 co-relation queries the response was YES. [2024-11-28 05:12:31,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4367 conditions, 1139 events. 304/1139 cut-off events. For 23676/23676 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3753 event pairs, 224 based on Foata normal form. 58/1092 useless extension candidates. Maximal degree in co-relation 3360. Up to 489 conditions per place. [2024-11-28 05:12:31,090 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 30 selfloop transitions, 196 changer transitions 0/244 dead transitions. [2024-11-28 05:12:31,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 244 transitions, 4209 flow [2024-11-28 05:12:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:12:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:12:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-11-28 05:12:31,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2024-11-28 05:12:31,094 INFO L175 Difference]: Start difference. First operand has 351 places, 274 transitions, 4082 flow. Second operand 7 states and 183 transitions. [2024-11-28 05:12:31,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 244 transitions, 4209 flow [2024-11-28 05:12:31,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 244 transitions, 3639 flow, removed 80 selfloop flow, removed 53 redundant places. [2024-11-28 05:12:31,204 INFO L231 Difference]: Finished difference. Result has 303 places, 244 transitions, 3579 flow [2024-11-28 05:12:31,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3579, PETRI_PLACES=303, PETRI_TRANSITIONS=244} [2024-11-28 05:12:31,207 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 247 predicate places. [2024-11-28 05:12:31,208 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 244 transitions, 3579 flow [2024-11-28 05:12:31,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:12:31,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:31,209 INFO L206 CegarLoopForPetriNet]: trace histogram [60, 60, 60, 60, 60, 2, 2, 2, 1, 1, 1] [2024-11-28 05:12:31,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:12:31,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 05:12:31,409 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:12:31,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash 593247143, now seen corresponding path program 1 times [2024-11-28 05:12:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084920503] [2024-11-28 05:12:31,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8974 backedges. 4563 proven. 0 refuted. 0 times theorem prover too weak. 4411 trivial. 0 not checked. [2024-11-28 05:12:33,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:33,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084920503] [2024-11-28 05:12:33,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084920503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:33,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:33,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:12:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721644411] [2024-11-28 05:12:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:33,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:33,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:33,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:33,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-11-28 05:12:33,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 244 transitions, 3579 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:12:33,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:33,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-11-28 05:12:33,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:34,249 INFO L124 PetriNetUnfolderBase]: 304/1137 cut-off events. [2024-11-28 05:12:34,250 INFO L125 PetriNetUnfolderBase]: For 8805/8805 co-relation queries the response was YES. [2024-11-28 05:12:34,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 1137 events. 304/1137 cut-off events. For 8805/8805 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3770 event pairs, 224 based on Foata normal form. 2/1034 useless extension candidates. Maximal degree in co-relation 3276. Up to 485 conditions per place. [2024-11-28 05:12:34,257 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 206 selfloop transitions, 8 changer transitions 0/243 dead transitions. [2024-11-28 05:12:34,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 243 transitions, 4003 flow [2024-11-28 05:12:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:12:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-28 05:12:34,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2024-11-28 05:12:34,258 INFO L175 Difference]: Start difference. First operand has 303 places, 244 transitions, 3579 flow. Second operand 4 states and 129 transitions. [2024-11-28 05:12:34,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 243 transitions, 4003 flow [2024-11-28 05:12:34,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 243 transitions, 3527 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 05:12:34,335 INFO L231 Difference]: Finished difference. Result has 298 places, 243 transitions, 3115 flow [2024-11-28 05:12:34,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3115, PETRI_PLACES=298, PETRI_TRANSITIONS=243} [2024-11-28 05:12:34,336 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 242 predicate places. [2024-11-28 05:12:34,337 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 243 transitions, 3115 flow [2024-11-28 05:12:34,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:12:34,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:34,337 INFO L206 CegarLoopForPetriNet]: trace histogram [60, 60, 60, 60, 60, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:34,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:12:34,337 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:12:34,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1586859319, now seen corresponding path program 2 times [2024-11-28 05:12:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935915879] [2024-11-28 05:12:34,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:12:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:35,324 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:12:35,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:12:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8976 backedges. 0 proven. 4566 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2024-11-28 05:12:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935915879] [2024-11-28 05:12:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935915879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834571603] [2024-11-28 05:12:36,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:12:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:36,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:36,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:12:39,033 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:12:39,033 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:12:39,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 5888 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:12:39,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8976 backedges. 0 proven. 4566 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2024-11-28 05:12:39,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:12:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8976 backedges. 0 proven. 4566 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2024-11-28 05:12:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834571603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:12:39,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:12:39,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 05:12:39,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203955369] [2024-11-28 05:12:39,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:12:39,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:12:39,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:39,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:12:39,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:12:39,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-28 05:12:39,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 243 transitions, 3115 flow. Second operand has 14 states, 14 states have (on average 24.5) internal successors, (343), 14 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:12:39,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:39,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-28 05:12:39,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:41,385 INFO L124 PetriNetUnfolderBase]: 306/1448 cut-off events. [2024-11-28 05:12:41,386 INFO L125 PetriNetUnfolderBase]: For 13585/13585 co-relation queries the response was YES. [2024-11-28 05:12:41,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5872 conditions, 1448 events. 306/1448 cut-off events. For 13585/13585 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3588 event pairs, 224 based on Foata normal form. 3/1346 useless extension candidates. Maximal degree in co-relation 5025. Up to 483 conditions per place. [2024-11-28 05:12:41,393 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 331 selfloop transitions, 11 changer transitions 0/371 dead transitions. [2024-11-28 05:12:41,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 371 transitions, 6030 flow [2024-11-28 05:12:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:12:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:12:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 297 transitions. [2024-11-28 05:12:41,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-28 05:12:41,394 INFO L175 Difference]: Start difference. First operand has 298 places, 243 transitions, 3115 flow. Second operand 11 states and 297 transitions. [2024-11-28 05:12:41,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 371 transitions, 6030 flow [2024-11-28 05:12:41,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 371 transitions, 5998 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:12:41,454 INFO L231 Difference]: Finished difference. Result has 309 places, 249 transitions, 3448 flow [2024-11-28 05:12:41,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3448, PETRI_PLACES=309, PETRI_TRANSITIONS=249} [2024-11-28 05:12:41,455 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 253 predicate places. [2024-11-28 05:12:41,455 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 249 transitions, 3448 flow [2024-11-28 05:12:41,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.5) internal successors, (343), 14 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:12:41,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:41,456 INFO L206 CegarLoopForPetriNet]: trace histogram [150, 150, 150, 150, 150, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:41,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:12:41,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ceabfae-f563-41b8-90ba-be158b266cfe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:41,656 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:12:41,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:41,659 INFO L85 PathProgramCache]: Analyzing trace with hash 931160145, now seen corresponding path program 3 times [2024-11-28 05:12:41,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:41,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152089634] [2024-11-28 05:12:41,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:12:41,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms