./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:42:32,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:42:32,482 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:42:32,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:42:32,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:42:32,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:42:32,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:42:32,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:42:32,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:42:32,514 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:42:32,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:42:32,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:42:32,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:42:32,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:42:32,517 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:42:32,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:42:32,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:42:32,518 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:42:32,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:42:32,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:42:32,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:42:32,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:42:32,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:42:32,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:42:32,522 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:42:32,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:42:32,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:42:32,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:42:32,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:42:32,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:42:32,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:42:32,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:42:32,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:42:32,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:42:32,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:42:32,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:42:32,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:42:32,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:42:32,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:42:32,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:42:32,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:42:32,536 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:42:32,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:42:32,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:42:32,536 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2023-11-29 00:42:32,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:42:32,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:42:32,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:42:32,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:42:32,806 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:42:32,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-29 00:42:35,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:42:35,815 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:42:35,816 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-29 00:42:35,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/data/f35b01241/d8e8fc96e5864640a0572a384844e566/FLAG6f0e85f1f [2023-11-29 00:42:35,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/data/f35b01241/d8e8fc96e5864640a0572a384844e566 [2023-11-29 00:42:35,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:42:35,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:42:35,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:42:35,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:42:35,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:42:35,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:42:35" (1/1) ... [2023-11-29 00:42:35,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3bafae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:35, skipping insertion in model container [2023-11-29 00:42:35,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:42:35" (1/1) ... [2023-11-29 00:42:35,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:42:36,273 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,273 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,273 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,274 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:42:36,318 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:42:36,355 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,356 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,356 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,357 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 00:42:36,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:42:36,429 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:42:36,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36 WrapperNode [2023-11-29 00:42:36,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:42:36,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:42:36,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:42:36,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:42:36,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,484 INFO L138 Inliner]: procedures = 273, calls = 36, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 143 [2023-11-29 00:42:36,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:42:36,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:42:36,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:42:36,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:42:36,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,520 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [1, 1, 16]. 89 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 14 writes are split as follows [1, 1, 12]. [2023-11-29 00:42:36,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:42:36,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:42:36,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:42:36,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:42:36,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (1/1) ... [2023-11-29 00:42:36,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:42:36,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:36,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:42:36,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:42:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-29 00:42:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-29 00:42:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:42:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:42:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:42:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 00:42:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:42:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 00:42:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:42:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:42:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:42:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:42:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:42:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:42:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 00:42:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:42:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:42:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:42:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:42:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 00:42:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:42:36,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:42:36,622 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:42:36,771 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:42:36,774 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:42:37,066 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:42:37,268 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:42:37,268 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:42:37,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:42:37 BoogieIcfgContainer [2023-11-29 00:42:37,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:42:37,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:42:37,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:42:37,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:42:37,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:42:35" (1/3) ... [2023-11-29 00:42:37,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bd23b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:42:37, skipping insertion in model container [2023-11-29 00:42:37,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:36" (2/3) ... [2023-11-29 00:42:37,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bd23b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:42:37, skipping insertion in model container [2023-11-29 00:42:37,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:42:37" (3/3) ... [2023-11-29 00:42:37,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-11-29 00:42:37,281 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:42:37,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:42:37,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 00:42:37,289 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:42:37,342 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:42:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 122 flow [2023-11-29 00:42:37,397 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2023-11-29 00:42:37,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:42:37,400 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 6. Compared 142 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. [2023-11-29 00:42:37,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 122 flow [2023-11-29 00:42:37,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 116 flow [2023-11-29 00:42:37,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:42:37,420 INFO L357 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, mHoare=true, 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;@6479b5f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:42:37,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 00:42:37,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:42:37,425 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-29 00:42:37,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:42:37,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:37,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 00:42:37,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:37,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash 12877491, now seen corresponding path program 1 times [2023-11-29 00:42:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:37,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812939937] [2023-11-29 00:42:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:37,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980055772] [2023-11-29 00:42:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:37,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:37,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:42:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:37,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:42:37,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:37,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812939937] [2023-11-29 00:42:37,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980055772] [2023-11-29 00:42:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980055772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:37,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:37,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:42:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366703817] [2023-11-29 00:42:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:37,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:42:37,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:42:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:42:37,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:42:37,763 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) [2023-11-29 00:42:37,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:37,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:42:37,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:38,075 INFO L124 PetriNetUnfolderBase]: 303/696 cut-off events. [2023-11-29 00:42:38,075 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:42:38,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 696 events. 303/696 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3640 event pairs, 224 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 1162. Up to 490 conditions per place. [2023-11-29 00:42:38,085 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-29 00:42:38,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 202 flow [2023-11-29 00:42:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:42:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:42:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-29 00:42:38,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2023-11-29 00:42:38,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-29 00:42:38,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-29 00:42:38,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:38,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-29 00:42:38,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:38,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-29 00:42:38,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-29 00:42:38,111 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 116 flow. Second operand 3 states and 113 transitions. [2023-11-29 00:42:38,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 202 flow [2023-11-29 00:42:38,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:42:38,117 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2023-11-29 00:42:38,119 INFO L264 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} [2023-11-29 00:42:38,123 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-11-29 00:42:38,123 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2023-11-29 00:42:38,124 INFO L496 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) [2023-11-29 00:42:38,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:38,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 00:42:38,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:38,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:42:38,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:38,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 12877534, now seen corresponding path program 1 times [2023-11-29 00:42:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:38,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063561704] [2023-11-29 00:42:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:38,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063561704] [2023-11-29 00:42:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063561704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:38,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:38,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:42:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403419120] [2023-11-29 00:42:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:38,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:42:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:42:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:42:38,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:42:38,474 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) [2023-11-29 00:42:38,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:38,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:42:38,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:38,763 INFO L124 PetriNetUnfolderBase]: 303/710 cut-off events. [2023-11-29 00:42:38,763 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:42:38,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 710 events. 303/710 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3751 event pairs, 224 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 1203. Up to 495 conditions per place. [2023-11-29 00:42:38,770 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-29 00:42:38,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 206 flow [2023-11-29 00:42:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:42:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:42:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-29 00:42:38,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2023-11-29 00:42:38,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-29 00:42:38,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-29 00:42:38,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:38,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-29 00:42:38,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:38,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-29 00:42:38,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-29 00:42:38,776 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 110 transitions. [2023-11-29 00:42:38,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 206 flow [2023-11-29 00:42:38,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:42:38,778 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 144 flow [2023-11-29 00:42:38,779 INFO L264 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} [2023-11-29 00:42:38,779 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-29 00:42:38,779 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 144 flow [2023-11-29 00:42:38,780 INFO L496 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) [2023-11-29 00:42:38,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:38,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:42:38,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:42:38,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:38,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:38,781 INFO L85 PathProgramCache]: Analyzing trace with hash -509620533, now seen corresponding path program 1 times [2023-11-29 00:42:38,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:38,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112477610] [2023-11-29 00:42:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:38,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:38,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886377617] [2023-11-29 00:42:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:38,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:38,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:38,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:42:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:38,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:42:38,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:39,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:39,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:39,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112477610] [2023-11-29 00:42:39,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:39,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886377617] [2023-11-29 00:42:39,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886377617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:39,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:39,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:42:39,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932142287] [2023-11-29 00:42:39,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:39,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:39,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:39,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:42:39,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 144 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) [2023-11-29 00:42:39,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:39,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:42:39,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:39,252 INFO L124 PetriNetUnfolderBase]: 303/706 cut-off events. [2023-11-29 00:42:39,252 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 00:42:39,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 706 events. 303/706 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3728 event pairs, 224 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 1188. Up to 487 conditions per place. [2023-11-29 00:42:39,257 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 29 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-11-29 00:42:39,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 210 flow [2023-11-29 00:42:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2023-11-29 00:42:39,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2023-11-29 00:42:39,260 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 129 transitions. [2023-11-29 00:42:39,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 129 transitions. [2023-11-29 00:42:39,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:39,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 129 transitions. [2023-11-29 00:42:39,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2023-11-29 00:42:39,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:39,263 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:39,263 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 144 flow. Second operand 4 states and 129 transitions. [2023-11-29 00:42:39,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 210 flow [2023-11-29 00:42:39,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:42:39,266 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 150 flow [2023-11-29 00:42:39,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-29 00:42:39,267 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-29 00:42:39,267 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 150 flow [2023-11-29 00:42:39,268 INFO L496 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) [2023-11-29 00:42:39,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:39,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:39,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:42:39,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:39,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:39,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1381633079, now seen corresponding path program 1 times [2023-11-29 00:42:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:39,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570345692] [2023-11-29 00:42:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:39,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:39,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:39,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382380762] [2023-11-29 00:42:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:39,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:39,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:39,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:42:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:39,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:42:39,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:39,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:39,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570345692] [2023-11-29 00:42:39,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382380762] [2023-11-29 00:42:39,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382380762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:39,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:39,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:42:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586759349] [2023-11-29 00:42:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:39,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:39,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:39,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:39,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:42:39,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 150 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) [2023-11-29 00:42:39,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:39,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:42:39,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:40,057 INFO L124 PetriNetUnfolderBase]: 303/704 cut-off events. [2023-11-29 00:42:40,057 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-29 00:42:40,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 704 events. 303/704 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3724 event pairs, 224 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 1175. Up to 495 conditions per place. [2023-11-29 00:42:40,062 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 32 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-11-29 00:42:40,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 224 flow [2023-11-29 00:42:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:40,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-29 00:42:40,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2023-11-29 00:42:40,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-29 00:42:40,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-29 00:42:40,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:40,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-29 00:42:40,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:40,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:40,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:40,069 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 150 flow. Second operand 4 states and 131 transitions. [2023-11-29 00:42:40,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 224 flow [2023-11-29 00:42:40,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:42:40,071 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 156 flow [2023-11-29 00:42:40,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-11-29 00:42:40,072 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-29 00:42:40,072 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 156 flow [2023-11-29 00:42:40,073 INFO L496 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) [2023-11-29 00:42:40,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:40,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:40,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:40,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:40,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:40,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash 604507082, now seen corresponding path program 1 times [2023-11-29 00:42:40,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:40,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154324860] [2023-11-29 00:42:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:40,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:40,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:40,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965197259] [2023-11-29 00:42:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:40,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:40,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:40,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:40,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:42:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:40,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:42:40,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:40,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:40,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:40,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154324860] [2023-11-29 00:42:40,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:40,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965197259] [2023-11-29 00:42:40,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965197259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:40,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:40,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 00:42:40,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975713992] [2023-11-29 00:42:40,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:40,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:42:40,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:40,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:42:40,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:42:40,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-29 00:42:40,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 156 flow. Second operand has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 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) [2023-11-29 00:42:40,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:40,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-29 00:42:40,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:41,123 INFO L124 PetriNetUnfolderBase]: 303/718 cut-off events. [2023-11-29 00:42:41,124 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-29 00:42:41,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 718 events. 303/718 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3788 event pairs, 224 based on Foata normal form. 6/613 useless extension candidates. Maximal degree in co-relation 1207. Up to 489 conditions per place. [2023-11-29 00:42:41,129 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 34 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-11-29 00:42:41,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 252 flow [2023-11-29 00:42:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:42:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:42:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2023-11-29 00:42:41,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2023-11-29 00:42:41,131 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 204 transitions. [2023-11-29 00:42:41,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 204 transitions. [2023-11-29 00:42:41,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:41,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 204 transitions. [2023-11-29 00:42:41,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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) [2023-11-29 00:42:41,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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) [2023-11-29 00:42:41,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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) [2023-11-29 00:42:41,135 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 156 flow. Second operand 7 states and 204 transitions. [2023-11-29 00:42:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 252 flow [2023-11-29 00:42:41,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:42:41,138 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 196 flow [2023-11-29 00:42:41,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-11-29 00:42:41,138 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-29 00:42:41,139 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 196 flow [2023-11-29 00:42:41,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 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) [2023-11-29 00:42:41,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:41,139 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2023-11-29 00:42:41,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:42:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:41,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:41,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1347692727, now seen corresponding path program 1 times [2023-11-29 00:42:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:41,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266940998] [2023-11-29 00:42:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:41,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:41,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833538894] [2023-11-29 00:42:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:41,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:41,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:41,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:41,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:42:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:41,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:42:41,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:41,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:41,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:41,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266940998] [2023-11-29 00:42:41,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:41,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833538894] [2023-11-29 00:42:41,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833538894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:41,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:41,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 00:42:41,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951274012] [2023-11-29 00:42:41,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:41,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:42:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:42:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:42:41,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-29 00:42:41,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 196 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) [2023-11-29 00:42:41,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:41,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-29 00:42:41,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:42,398 INFO L124 PetriNetUnfolderBase]: 305/730 cut-off events. [2023-11-29 00:42:42,399 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-29 00:42:42,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 730 events. 305/730 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3869 event pairs, 224 based on Foata normal form. 4/623 useless extension candidates. Maximal degree in co-relation 1248. Up to 489 conditions per place. [2023-11-29 00:42:42,404 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 32 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2023-11-29 00:42:42,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 314 flow [2023-11-29 00:42:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:42:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:42:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 298 transitions. [2023-11-29 00:42:42,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527910685805425 [2023-11-29 00:42:42,407 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 298 transitions. [2023-11-29 00:42:42,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 298 transitions. [2023-11-29 00:42:42,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:42,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 298 transitions. [2023-11-29 00:42:42,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.09090909090909) internal successors, (298), 11 states have internal predecessors, (298), 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) [2023-11-29 00:42:42,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 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) [2023-11-29 00:42:42,411 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 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) [2023-11-29 00:42:42,411 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 196 flow. Second operand 11 states and 298 transitions. [2023-11-29 00:42:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 314 flow [2023-11-29 00:42:42,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 302 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 00:42:42,415 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 235 flow [2023-11-29 00:42:42,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=11, PETRI_FLOW=235, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-11-29 00:42:42,417 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-11-29 00:42:42,417 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 235 flow [2023-11-29 00:42:42,417 INFO L496 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) [2023-11-29 00:42:42,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:42,418 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-29 00:42:42,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:42:42,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:42,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:42,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:42,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1947400118, now seen corresponding path program 2 times [2023-11-29 00:42:42,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:42,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693485595] [2023-11-29 00:42:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:42,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:42,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396435070] [2023-11-29 00:42:42,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:42:42,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:42,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:42,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:42,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:42:42,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:42:42,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:42,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:42:42,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:42:42,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:42,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:42,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693485595] [2023-11-29 00:42:42,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:42,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396435070] [2023-11-29 00:42:42,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396435070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:42,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:42,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:42:42,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668558457] [2023-11-29 00:42:42,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:42,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:42,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:42,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:42:42,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-29 00:42:42,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:42,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:42:42,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:43,187 INFO L124 PetriNetUnfolderBase]: 305/728 cut-off events. [2023-11-29 00:42:43,187 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-29 00:42:43,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 728 events. 305/728 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3858 event pairs, 224 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 1302. Up to 482 conditions per place. [2023-11-29 00:42:43,191 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-11-29 00:42:43,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 62 transitions, 313 flow [2023-11-29 00:42:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2023-11-29 00:42:43,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2023-11-29 00:42:43,193 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 129 transitions. [2023-11-29 00:42:43,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 129 transitions. [2023-11-29 00:42:43,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:43,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 129 transitions. [2023-11-29 00:42:43,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2023-11-29 00:42:43,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:43,195 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:43,195 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 235 flow. Second operand 4 states and 129 transitions. [2023-11-29 00:42:43,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 62 transitions, 313 flow [2023-11-29 00:42:43,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 273 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-29 00:42:43,198 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 205 flow [2023-11-29 00:42:43,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2023-11-29 00:42:43,199 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-29 00:42:43,199 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 205 flow [2023-11-29 00:42:43,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-29 00:42:43,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:43,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-29 00:42:43,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:43,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:43,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:43,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:43,401 INFO L85 PathProgramCache]: Analyzing trace with hash -239861125, now seen corresponding path program 1 times [2023-11-29 00:42:43,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:43,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773723545] [2023-11-29 00:42:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:43,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:43,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663872768] [2023-11-29 00:42:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:43,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:43,473 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:43,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:42:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:43,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:42:43,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:43,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:43,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:43,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773723545] [2023-11-29 00:42:43,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:43,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663872768] [2023-11-29 00:42:43,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663872768] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:43,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:43,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:42:43,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021773867] [2023-11-29 00:42:43,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:43,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:42:43,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:43,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:42:43,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:42:43,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-29 00:42:43,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 205 flow. Second operand has 16 states, 16 states have (on average 24.4375) internal successors, (391), 16 states have internal predecessors, (391), 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) [2023-11-29 00:42:43,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:43,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-29 00:42:43,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:44,684 INFO L124 PetriNetUnfolderBase]: 303/762 cut-off events. [2023-11-29 00:42:44,684 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-29 00:42:44,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 762 events. 303/762 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3813 event pairs, 224 based on Foata normal form. 8/661 useless extension candidates. Maximal degree in co-relation 1268. Up to 489 conditions per place. [2023-11-29 00:42:44,689 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 37 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2023-11-29 00:42:44,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 368 flow [2023-11-29 00:42:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:42:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:42:44,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 400 transitions. [2023-11-29 00:42:44,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2023-11-29 00:42:44,692 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 400 transitions. [2023-11-29 00:42:44,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 400 transitions. [2023-11-29 00:42:44,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:44,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 400 transitions. [2023-11-29 00:42:44,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 26.666666666666668) internal successors, (400), 15 states have internal predecessors, (400), 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) [2023-11-29 00:42:44,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 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) [2023-11-29 00:42:44,696 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 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) [2023-11-29 00:42:44,696 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 205 flow. Second operand 15 states and 400 transitions. [2023-11-29 00:42:44,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 368 flow [2023-11-29 00:42:44,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 347 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:42:44,700 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 271 flow [2023-11-29 00:42:44,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=271, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2023-11-29 00:42:44,701 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2023-11-29 00:42:44,701 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 271 flow [2023-11-29 00:42:44,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.4375) internal successors, (391), 16 states have internal predecessors, (391), 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) [2023-11-29 00:42:44,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:44,702 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-29 00:42:44,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:42:44,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:44,902 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:44,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1075448187, now seen corresponding path program 2 times [2023-11-29 00:42:44,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:44,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036180989] [2023-11-29 00:42:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:44,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:45,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:45,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145496472] [2023-11-29 00:42:45,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:42:45,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:45,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:45,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:45,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:42:45,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:42:45,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:45,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:42:45,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 00:42:45,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036180989] [2023-11-29 00:42:45,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145496472] [2023-11-29 00:42:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145496472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:45,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:42:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043688619] [2023-11-29 00:42:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:45,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:42:45,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-29 00:42:45,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:45,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:42:45,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:45,663 INFO L124 PetriNetUnfolderBase]: 303/761 cut-off events. [2023-11-29 00:42:45,663 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-29 00:42:45,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 761 events. 303/761 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3814 event pairs, 224 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 1290. Up to 501 conditions per place. [2023-11-29 00:42:45,668 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 58 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2023-11-29 00:42:45,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 518 flow [2023-11-29 00:42:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-29 00:42:45,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2023-11-29 00:42:45,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-29 00:42:45,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-29 00:42:45,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:45,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-29 00:42:45,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2023-11-29 00:42:45,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:45,672 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 00:42:45,672 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 271 flow. Second operand 4 states and 134 transitions. [2023-11-29 00:42:45,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 518 flow [2023-11-29 00:42:45,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 494 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 00:42:45,675 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 283 flow [2023-11-29 00:42:45,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-11-29 00:42:45,676 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-11-29 00:42:45,676 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 283 flow [2023-11-29 00:42:45,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-29 00:42:45,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:45,677 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2023-11-29 00:42:45,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:42:45,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:45,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:45,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1561805961, now seen corresponding path program 1 times [2023-11-29 00:42:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:45,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119232018] [2023-11-29 00:42:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:46,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:46,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94193911] [2023-11-29 00:42:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:46,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:46,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:46,017 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:46,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:42:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:46,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:42:46,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:42:46,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:42:46,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:46,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119232018] [2023-11-29 00:42:46,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:46,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94193911] [2023-11-29 00:42:46,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94193911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:46,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:46,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-29 00:42:46,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508202888] [2023-11-29 00:42:46,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:46,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 00:42:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:46,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 00:42:46,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-29 00:42:46,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-29 00:42:46,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 283 flow. Second operand has 32 states, 32 states have (on average 24.625) internal successors, (788), 32 states have internal predecessors, (788), 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) [2023-11-29 00:42:46,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:46,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-29 00:42:46,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:48,559 INFO L124 PetriNetUnfolderBase]: 303/857 cut-off events. [2023-11-29 00:42:48,559 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2023-11-29 00:42:48,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 857 events. 303/857 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3852 event pairs, 224 based on Foata normal form. 16/764 useless extension candidates. Maximal degree in co-relation 1535. Up to 489 conditions per place. [2023-11-29 00:42:48,563 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 46 selfloop transitions, 31 changer transitions 0/97 dead transitions. [2023-11-29 00:42:48,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 97 transitions, 687 flow [2023-11-29 00:42:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 00:42:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 00:42:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 796 transitions. [2023-11-29 00:42:48,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504810413129598 [2023-11-29 00:42:48,568 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 796 transitions. [2023-11-29 00:42:48,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 796 transitions. [2023-11-29 00:42:48,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:48,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 796 transitions. [2023-11-29 00:42:48,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 25.677419354838708) internal successors, (796), 31 states have internal predecessors, (796), 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) [2023-11-29 00:42:48,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 57.0) internal successors, (1824), 32 states have internal predecessors, (1824), 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) [2023-11-29 00:42:48,577 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 57.0) internal successors, (1824), 32 states have internal predecessors, (1824), 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) [2023-11-29 00:42:48,577 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 283 flow. Second operand 31 states and 796 transitions. [2023-11-29 00:42:48,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 97 transitions, 687 flow [2023-11-29 00:42:48,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 97 transitions, 683 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:42:48,582 INFO L231 Difference]: Finished difference. Result has 120 places, 86 transitions, 544 flow [2023-11-29 00:42:48,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=544, PETRI_PLACES=120, PETRI_TRANSITIONS=86} [2023-11-29 00:42:48,583 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2023-11-29 00:42:48,583 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 86 transitions, 544 flow [2023-11-29 00:42:48,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 24.625) internal successors, (788), 32 states have internal predecessors, (788), 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) [2023-11-29 00:42:48,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:48,584 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2023-11-29 00:42:48,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:42:48,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:42:48,788 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:48,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1725281929, now seen corresponding path program 2 times [2023-11-29 00:42:48,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:48,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784307924] [2023-11-29 00:42:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:49,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:49,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719480388] [2023-11-29 00:42:49,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:42:49,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:49,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:49,017 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:49,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:42:49,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:42:49,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:49,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 00:42:49,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:42:50,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:42:51,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:51,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784307924] [2023-11-29 00:42:51,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:51,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719480388] [2023-11-29 00:42:51,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719480388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:51,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:51,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-29 00:42:51,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662598205] [2023-11-29 00:42:51,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:51,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 00:42:51,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 00:42:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 00:42:51,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2023-11-29 00:42:51,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 86 transitions, 544 flow. Second operand has 61 states, 61 states have (on average 24.59016393442623) internal successors, (1500), 61 states have internal predecessors, (1500), 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) [2023-11-29 00:42:51,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:51,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2023-11-29 00:42:51,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:54,392 INFO L124 PetriNetUnfolderBase]: 303/1037 cut-off events. [2023-11-29 00:42:54,392 INFO L125 PetriNetUnfolderBase]: For 3508/3508 co-relation queries the response was YES. [2023-11-29 00:42:54,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2767 conditions, 1037 events. 303/1037 cut-off events. For 3508/3508 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3923 event pairs, 224 based on Foata normal form. 30/958 useless extension candidates. Maximal degree in co-relation 2041. Up to 489 conditions per place. [2023-11-29 00:42:54,398 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 61 selfloop transitions, 61 changer transitions 0/142 dead transitions. [2023-11-29 00:42:54,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 142 transitions, 1475 flow [2023-11-29 00:42:54,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 00:42:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-29 00:42:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1538 transitions. [2023-11-29 00:42:54,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423353465631291 [2023-11-29 00:42:54,405 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 1538 transitions. [2023-11-29 00:42:54,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 1538 transitions. [2023-11-29 00:42:54,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:54,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 1538 transitions. [2023-11-29 00:42:54,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 25.21311475409836) internal successors, (1538), 61 states have internal predecessors, (1538), 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) [2023-11-29 00:42:54,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 57.0) internal successors, (3534), 62 states have internal predecessors, (3534), 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) [2023-11-29 00:42:54,421 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 57.0) internal successors, (3534), 62 states have internal predecessors, (3534), 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) [2023-11-29 00:42:54,422 INFO L175 Difference]: Start difference. First operand has 120 places, 86 transitions, 544 flow. Second operand 61 states and 1538 transitions. [2023-11-29 00:42:54,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 142 transitions, 1475 flow [2023-11-29 00:42:54,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 142 transitions, 1449 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-29 00:42:54,436 INFO L231 Difference]: Finished difference. Result has 184 places, 117 transitions, 1098 flow [2023-11-29 00:42:54,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1098, PETRI_PLACES=184, PETRI_TRANSITIONS=117} [2023-11-29 00:42:54,437 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 128 predicate places. [2023-11-29 00:42:54,437 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 117 transitions, 1098 flow [2023-11-29 00:42:54,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 24.59016393442623) internal successors, (1500), 61 states have internal predecessors, (1500), 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) [2023-11-29 00:42:54,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:54,439 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 00:42:54,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:42:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:54,639 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:54,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 274911203, now seen corresponding path program 3 times [2023-11-29 00:42:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:54,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203282888] [2023-11-29 00:42:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:55,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806523131] [2023-11-29 00:42:55,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:42:55,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:55,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:55,075 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:55,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:42:55,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:42:55,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:55,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:42:55,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 00:42:56,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:56,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:56,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203282888] [2023-11-29 00:42:56,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806523131] [2023-11-29 00:42:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806523131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:56,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:42:56,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769853329] [2023-11-29 00:42:56,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:42:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:42:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:42:56,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2023-11-29 00:42:56,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 117 transitions, 1098 flow. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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) [2023-11-29 00:42:56,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:56,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2023-11-29 00:42:56,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:57,075 INFO L124 PetriNetUnfolderBase]: 303/1008 cut-off events. [2023-11-29 00:42:57,075 INFO L125 PetriNetUnfolderBase]: For 3465/3465 co-relation queries the response was YES. [2023-11-29 00:42:57,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 1008 events. 303/1008 cut-off events. For 3465/3465 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3807 event pairs, 224 based on Foata normal form. 29/928 useless extension candidates. Maximal degree in co-relation 2048. Up to 482 conditions per place. [2023-11-29 00:42:57,081 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 87 selfloop transitions, 67 changer transitions 0/177 dead transitions. [2023-11-29 00:42:57,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 177 transitions, 2192 flow [2023-11-29 00:42:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:42:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:42:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2023-11-29 00:42:57,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42280701754385963 [2023-11-29 00:42:57,083 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 241 transitions. [2023-11-29 00:42:57,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 241 transitions. [2023-11-29 00:42:57,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:57,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 241 transitions. [2023-11-29 00:42:57,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:57,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 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) [2023-11-29 00:42:57,085 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 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) [2023-11-29 00:42:57,086 INFO L175 Difference]: Start difference. First operand has 184 places, 117 transitions, 1098 flow. Second operand 10 states and 241 transitions. [2023-11-29 00:42:57,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 177 transitions, 2192 flow [2023-11-29 00:42:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 177 transitions, 2076 flow, removed 2 selfloop flow, removed 28 redundant places. [2023-11-29 00:42:57,105 INFO L231 Difference]: Finished difference. Result has 169 places, 177 transitions, 2150 flow [2023-11-29 00:42:57,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2150, PETRI_PLACES=169, PETRI_TRANSITIONS=177} [2023-11-29 00:42:57,106 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 113 predicate places. [2023-11-29 00:42:57,106 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 177 transitions, 2150 flow [2023-11-29 00:42:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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) [2023-11-29 00:42:57,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:57,107 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:57,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:42:57,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:57,310 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:42:57,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash -235808346, now seen corresponding path program 1 times [2023-11-29 00:42:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041963531] [2023-11-29 00:42:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:57,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:57,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784686202] [2023-11-29 00:42:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:57,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:57,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:57,689 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:57,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:42:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:58,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:42:58,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 00:42:59,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 00:42:59,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041963531] [2023-11-29 00:42:59,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:42:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784686202] [2023-11-29 00:42:59,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784686202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:59,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:59,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 00:42:59,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829565278] [2023-11-29 00:42:59,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:59,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:42:59,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:42:59,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:42:59,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:42:59,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 177 transitions, 2150 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 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) [2023-11-29 00:42:59,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:59,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:42:59,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:59,913 INFO L124 PetriNetUnfolderBase]: 304/1193 cut-off events. [2023-11-29 00:42:59,913 INFO L125 PetriNetUnfolderBase]: For 6626/6626 co-relation queries the response was YES. [2023-11-29 00:42:59,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 1193 events. 304/1193 cut-off events. For 6626/6626 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3623 event pairs, 224 based on Foata normal form. 3/1087 useless extension candidates. Maximal degree in co-relation 3072. Up to 483 conditions per place. [2023-11-29 00:42:59,920 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 210 selfloop transitions, 7 changer transitions 0/241 dead transitions. [2023-11-29 00:42:59,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 241 transitions, 3646 flow [2023-11-29 00:42:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:42:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:42:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2023-11-29 00:42:59,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363408521303258 [2023-11-29 00:42:59,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 214 transitions. [2023-11-29 00:42:59,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 214 transitions. [2023-11-29 00:42:59,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:59,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 214 transitions. [2023-11-29 00:42:59,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:59,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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) [2023-11-29 00:42:59,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 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) [2023-11-29 00:42:59,924 INFO L175 Difference]: Start difference. First operand has 169 places, 177 transitions, 2150 flow. Second operand 7 states and 214 transitions. [2023-11-29 00:42:59,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 241 transitions, 3646 flow [2023-11-29 00:42:59,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 241 transitions, 3628 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 00:42:59,974 INFO L231 Difference]: Finished difference. Result has 175 places, 180 transitions, 2250 flow [2023-11-29 00:42:59,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2250, PETRI_PLACES=175, PETRI_TRANSITIONS=180} [2023-11-29 00:42:59,975 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2023-11-29 00:42:59,975 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 180 transitions, 2250 flow [2023-11-29 00:42:59,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 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) [2023-11-29 00:42:59,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:59,976 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 00:42:59,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:43:00,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:00,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:43:00,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash -67686908, now seen corresponding path program 1 times [2023-11-29 00:43:00,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:00,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663465732] [2023-11-29 00:43:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:00,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:00,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:43:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76866449] [2023-11-29 00:43:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:00,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:00,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:00,641 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:00,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:43:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:03,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:43:03,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 00:43:03,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 00:43:03,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:03,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663465732] [2023-11-29 00:43:03,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:43:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76866449] [2023-11-29 00:43:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76866449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:03,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:43:03,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 00:43:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722136637] [2023-11-29 00:43:03,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:43:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:43:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:43:03,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2023-11-29 00:43:03,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 180 transitions, 2250 flow. Second operand has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 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) [2023-11-29 00:43:03,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:03,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2023-11-29 00:43:03,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:05,212 INFO L124 PetriNetUnfolderBase]: 304/1162 cut-off events. [2023-11-29 00:43:05,212 INFO L125 PetriNetUnfolderBase]: For 6791/6791 co-relation queries the response was YES. [2023-11-29 00:43:05,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3959 conditions, 1162 events. 304/1162 cut-off events. For 6791/6791 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3596 event pairs, 224 based on Foata normal form. 31/1084 useless extension candidates. Maximal degree in co-relation 3079. Up to 482 conditions per place. [2023-11-29 00:43:05,219 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 103 selfloop transitions, 136 changer transitions 0/256 dead transitions. [2023-11-29 00:43:05,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 256 transitions, 3854 flow [2023-11-29 00:43:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:43:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 00:43:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 421 transitions. [2023-11-29 00:43:05,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38873499538319484 [2023-11-29 00:43:05,221 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 421 transitions. [2023-11-29 00:43:05,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 421 transitions. [2023-11-29 00:43:05,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:05,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 421 transitions. [2023-11-29 00:43:05,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 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) [2023-11-29 00:43:05,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 57.0) internal successors, (1140), 20 states have internal predecessors, (1140), 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) [2023-11-29 00:43:05,225 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 57.0) internal successors, (1140), 20 states have internal predecessors, (1140), 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) [2023-11-29 00:43:05,225 INFO L175 Difference]: Start difference. First operand has 175 places, 180 transitions, 2250 flow. Second operand 19 states and 421 transitions. [2023-11-29 00:43:05,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 256 transitions, 3854 flow [2023-11-29 00:43:05,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 3846 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:43:05,269 INFO L231 Difference]: Finished difference. Result has 192 places, 246 transitions, 3706 flow [2023-11-29 00:43:05,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3706, PETRI_PLACES=192, PETRI_TRANSITIONS=246} [2023-11-29 00:43:05,270 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 136 predicate places. [2023-11-29 00:43:05,271 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 246 transitions, 3706 flow [2023-11-29 00:43:05,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 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) [2023-11-29 00:43:05,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:05,271 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 62, 62, 62, 3, 2, 2, 2, 1, 1] [2023-11-29 00:43:05,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:43:05,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:43:05,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:43:05,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1595050812, now seen corresponding path program 2 times [2023-11-29 00:43:05,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:05,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086064208] [2023-11-29 00:43:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:05,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:06,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:43:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809296008] [2023-11-29 00:43:06,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:06,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:06,404 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:06,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:43:31,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:43:31,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:31,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 5786 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:43:31,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9773 backedges. 5356 proven. 0 refuted. 0 times theorem prover too weak. 4417 trivial. 0 not checked. [2023-11-29 00:43:31,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:31,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:31,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086064208] [2023-11-29 00:43:31,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:43:31,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809296008] [2023-11-29 00:43:31,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809296008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:31,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:31,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:43:31,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412882945] [2023-11-29 00:43:31,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:31,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:43:31,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:31,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:43:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:43:31,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2023-11-29 00:43:31,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 246 transitions, 3706 flow. Second operand has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 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) [2023-11-29 00:43:31,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:31,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2023-11-29 00:43:31,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:33,117 INFO L124 PetriNetUnfolderBase]: 304/1134 cut-off events. [2023-11-29 00:43:33,117 INFO L125 PetriNetUnfolderBase]: For 8619/8619 co-relation queries the response was YES. [2023-11-29 00:43:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1134 events. 304/1134 cut-off events. For 8619/8619 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3577 event pairs, 224 based on Foata normal form. 28/1053 useless extension candidates. Maximal degree in co-relation 3244. Up to 482 conditions per place. [2023-11-29 00:43:33,125 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 190 selfloop transitions, 46 changer transitions 0/253 dead transitions. [2023-11-29 00:43:33,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 253 transitions, 4258 flow [2023-11-29 00:43:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:43:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:43:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2023-11-29 00:43:33,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44912280701754387 [2023-11-29 00:43:33,126 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 256 transitions. [2023-11-29 00:43:33,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 256 transitions. [2023-11-29 00:43:33,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:33,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 256 transitions. [2023-11-29 00:43:33,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.6) internal successors, (256), 10 states have internal predecessors, (256), 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) [2023-11-29 00:43:33,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 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) [2023-11-29 00:43:33,129 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 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) [2023-11-29 00:43:33,129 INFO L175 Difference]: Start difference. First operand has 192 places, 246 transitions, 3706 flow. Second operand 10 states and 256 transitions. [2023-11-29 00:43:33,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 253 transitions, 4258 flow [2023-11-29 00:43:33,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 253 transitions, 4116 flow, removed 3 selfloop flow, removed 15 redundant places. [2023-11-29 00:43:33,171 INFO L231 Difference]: Finished difference. Result has 186 places, 251 transitions, 3773 flow [2023-11-29 00:43:33,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3552, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3773, PETRI_PLACES=186, PETRI_TRANSITIONS=251} [2023-11-29 00:43:33,172 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 130 predicate places. [2023-11-29 00:43:33,172 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 251 transitions, 3773 flow [2023-11-29 00:43:33,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 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) [2023-11-29 00:43:33,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:33,173 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:33,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:43:33,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:33,373 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:43:33,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash -411616466, now seen corresponding path program 2 times [2023-11-29 00:43:33,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:33,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705163235] [2023-11-29 00:43:33,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:33,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:34,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:43:34,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405750023] [2023-11-29 00:43:34,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:34,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:34,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:34,623 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:34,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:43:38,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:43:38,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:38,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 8399 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:43:38,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20310 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6615 trivial. 0 not checked. [2023-11-29 00:43:38,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 20310 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6615 trivial. 0 not checked. [2023-11-29 00:43:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:39,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705163235] [2023-11-29 00:43:39,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:43:39,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405750023] [2023-11-29 00:43:39,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405750023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:39,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:43:39,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 00:43:39,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439206210] [2023-11-29 00:43:39,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:43:39,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:43:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:43:39,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-29 00:43:39,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 251 transitions, 3773 flow. Second operand has 16 states, 16 states have (on average 26.4375) internal successors, (423), 16 states have internal predecessors, (423), 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) [2023-11-29 00:43:39,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:39,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-29 00:43:39,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:40,658 INFO L124 PetriNetUnfolderBase]: 308/1754 cut-off events. [2023-11-29 00:43:40,658 INFO L125 PetriNetUnfolderBase]: For 22690/22690 co-relation queries the response was YES. [2023-11-29 00:43:40,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8290 conditions, 1754 events. 308/1754 cut-off events. For 22690/22690 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3579 event pairs, 224 based on Foata normal form. 4/1649 useless extension candidates. Maximal degree in co-relation 2197. Up to 483 conditions per place. [2023-11-29 00:43:40,669 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 453 selfloop transitions, 15 changer transitions 0/503 dead transitions. [2023-11-29 00:43:40,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 503 transitions, 9753 flow [2023-11-29 00:43:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:43:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:43:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 426 transitions. [2023-11-29 00:43:40,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982456140350877 [2023-11-29 00:43:40,671 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 426 transitions. [2023-11-29 00:43:40,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 426 transitions. [2023-11-29 00:43:40,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:40,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 426 transitions. [2023-11-29 00:43:40,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 28.4) internal successors, (426), 15 states have internal predecessors, (426), 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) [2023-11-29 00:43:40,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 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) [2023-11-29 00:43:40,675 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 states have internal predecessors, (912), 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) [2023-11-29 00:43:40,675 INFO L175 Difference]: Start difference. First operand has 186 places, 251 transitions, 3773 flow. Second operand 15 states and 426 transitions. [2023-11-29 00:43:40,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 503 transitions, 9753 flow [2023-11-29 00:43:40,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 503 transitions, 9708 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 00:43:40,781 INFO L231 Difference]: Finished difference. Result has 198 places, 260 transitions, 4097 flow [2023-11-29 00:43:40,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4097, PETRI_PLACES=198, PETRI_TRANSITIONS=260} [2023-11-29 00:43:40,782 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 142 predicate places. [2023-11-29 00:43:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 260 transitions, 4097 flow [2023-11-29 00:43:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 26.4375) internal successors, (423), 16 states have internal predecessors, (423), 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) [2023-11-29 00:43:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:40,783 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:40,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:43:40,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:43:40,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 00:43:40,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1224761918, now seen corresponding path program 3 times [2023-11-29 00:43:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:40,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420584757] [2023-11-29 00:43:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:40,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:44,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:43:44,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468603648] [2023-11-29 00:43:44,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:43:44,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:44,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:44,025 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:44,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4618da8-7363-4b39-80ba-7973f31a5f88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process