./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme --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 e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:46,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:46,903 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:53:46,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:46,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:46,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:46,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:46,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:46,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:46,962 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:46,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:46,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:46,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:46,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:46,967 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:46,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:46,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:46,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:46,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:46,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:46,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:46,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:46,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:46,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:46,971 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:46,972 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:46,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:46,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:46,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:46,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:46,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:46,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:46,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:46,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:46,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:46,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:46,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:46,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:46,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:46,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:46,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:46,978 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:46,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:46,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:46,979 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_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a [2023-11-26 11:53:47,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:47,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:47,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:47,432 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:47,433 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:47,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2023-11-26 11:53:51,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:51,522 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:51,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2023-11-26 11:53:51,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/data/c0a4e6b01/27bd2efd830a45dca7ff8799a1acde5f/FLAG853fc5bfd [2023-11-26 11:53:51,575 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/data/c0a4e6b01/27bd2efd830a45dca7ff8799a1acde5f [2023-11-26 11:53:51,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:51,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:51,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:51,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:51,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:51,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5073f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51, skipping insertion in model container [2023-11-26 11:53:51,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,758 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:52,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:52,731 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:52,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:52,914 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:52,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52 WrapperNode [2023-11-26 11:53:52,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:52,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:52,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:52,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:52,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:52,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,007 INFO L138 Inliner]: procedures = 371, calls = 31, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 135 [2023-11-26 11:53:53,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:53,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:53,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:53,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:53,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,058 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [6, 1, 14]. 67 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 [3, 1, 10]. [2023-11-26 11:53:53,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:53,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:53,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:53,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:53,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (1/1) ... [2023-11-26 11:53:53,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:53,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:53,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:53,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:53:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:53:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:53:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:53:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:53:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:53:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:53:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:53:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:53:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:53:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:53:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:53:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:53:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:53:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:53:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:53:53,196 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:53:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:53,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:53,199 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:53:53,469 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:53,476 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:53,929 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:54,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:54,255 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:53:54,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:54 BoogieIcfgContainer [2023-11-26 11:53:54,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:54,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:54,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:54,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:54,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:51" (1/3) ... [2023-11-26 11:53:54,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4165d61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:54, skipping insertion in model container [2023-11-26 11:53:54,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:52" (2/3) ... [2023-11-26 11:53:54,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4165d61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:54, skipping insertion in model container [2023-11-26 11:53:54,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:54" (3/3) ... [2023-11-26 11:53:54,270 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2023-11-26 11:53:54,279 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:53:54,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:54,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 11:53:54,292 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:53:54,349 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:53:54,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 25 transitions, 54 flow [2023-11-26 11:53:54,431 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2023-11-26 11:53:54,432 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:54,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2023-11-26 11:53:54,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 25 transitions, 54 flow [2023-11-26 11:53:54,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 11 places, 12 transitions, 24 flow [2023-11-26 11:53:54,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:54,469 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;@40c26ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:54,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-26 11:53:54,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:54,476 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-26 11:53:54,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:54,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:54,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:53:54,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:53:54,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash 388728, now seen corresponding path program 1 times [2023-11-26 11:53:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:54,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406663461] [2023-11-26 11:53:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:54,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:54,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406663461] [2023-11-26 11:53:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406663461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:54,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:54,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:54,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231951651] [2023-11-26 11:53:54,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:54,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:54,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:53:54,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 12 transitions, 24 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-26 11:53:54,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:54,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:53:54,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:55,093 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-11-26 11:53:55,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:55,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 15 events. 2/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-11-26 11:53:55,095 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 7 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2023-11-26 11:53:55,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 14 transitions, 48 flow [2023-11-26 11:53:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2023-11-26 11:53:55,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2023-11-26 11:53:55,113 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 33 transitions. [2023-11-26 11:53:55,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 33 transitions. [2023-11-26 11:53:55,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:55,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 33 transitions. [2023-11-26 11:53:55,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-26 11:53:55,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-26 11:53:55,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-26 11:53:55,127 INFO L175 Difference]: Start difference. First operand has 11 places, 12 transitions, 24 flow. Second operand 4 states and 33 transitions. [2023-11-26 11:53:55,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 14 transitions, 48 flow [2023-11-26 11:53:55,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 14 transitions, 48 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:53:55,131 INFO L231 Difference]: Finished difference. Result has 16 places, 14 transitions, 48 flow [2023-11-26 11:53:55,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=16, PETRI_TRANSITIONS=14} [2023-11-26 11:53:55,138 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 5 predicate places. [2023-11-26 11:53:55,138 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 14 transitions, 48 flow [2023-11-26 11:53:55,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-26 11:53:55,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:55,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:53:55,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:55,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:53:55,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1303920195, now seen corresponding path program 1 times [2023-11-26 11:53:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:55,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774420707] [2023-11-26 11:53:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:55,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774420707] [2023-11-26 11:53:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774420707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440848692] [2023-11-26 11:53:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:55,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:55,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:53:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:55,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:53:55,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:55,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:55,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440848692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:55,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:53:55,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:53:55,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066726474] [2023-11-26 11:53:55,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:55,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:55,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:55,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:55,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:53:55,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:53:55,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2023-11-26 11:53:55,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:55,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:53:55,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:55,655 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-26 11:53:55,655 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:53:55,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2023-11-26 11:53:55,656 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 3 selfloop transitions, 6 changer transitions 0/13 dead transitions. [2023-11-26 11:53:55,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 62 flow [2023-11-26 11:53:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 40 transitions. [2023-11-26 11:53:55,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2023-11-26 11:53:55,659 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 40 transitions. [2023-11-26 11:53:55,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 40 transitions. [2023-11-26 11:53:55,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:55,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 40 transitions. [2023-11-26 11:53:55,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-11-26 11:53:55,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:55,663 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:55,663 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 48 flow. Second operand 6 states and 40 transitions. [2023-11-26 11:53:55,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 62 flow [2023-11-26 11:53:55,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:55,665 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 54 flow [2023-11-26 11:53:55,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=54, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-11-26 11:53:55,666 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 8 predicate places. [2023-11-26 11:53:55,667 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 54 flow [2023-11-26 11:53:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2023-11-26 11:53:55,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:55,667 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:53:55,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:55,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:55,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:53:55,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:55,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1766819992, now seen corresponding path program 1 times [2023-11-26 11:53:55,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:55,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272786643] [2023-11-26 11:53:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:53:55,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272786643] [2023-11-26 11:53:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272786643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:55,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:55,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561651771] [2023-11-26 11:53:55,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:55,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:55,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:55,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:55,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:53:55,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:53:55,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:55,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:53:55,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:56,084 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-11-26 11:53:56,085 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:53:56,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 13 events. 2/13 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 16. Up to 7 conditions per place. [2023-11-26 11:53:56,086 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 4 selfloop transitions, 4 changer transitions 0/12 dead transitions. [2023-11-26 11:53:56,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 66 flow [2023-11-26 11:53:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2023-11-26 11:53:56,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29333333333333333 [2023-11-26 11:53:56,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 22 transitions. [2023-11-26 11:53:56,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 22 transitions. [2023-11-26 11:53:56,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:56,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 22 transitions. [2023-11-26 11:53:56,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-26 11:53:56,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2023-11-26 11:53:56,095 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2023-11-26 11:53:56,095 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 54 flow. Second operand 3 states and 22 transitions. [2023-11-26 11:53:56,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 66 flow [2023-11-26 11:53:56,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 44 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 11:53:56,099 INFO L231 Difference]: Finished difference. Result has 14 places, 12 transitions, 36 flow [2023-11-26 11:53:56,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=14, PETRI_TRANSITIONS=12} [2023-11-26 11:53:56,101 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 3 predicate places. [2023-11-26 11:53:56,101 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 12 transitions, 36 flow [2023-11-26 11:53:56,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:53:56,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:56,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:56,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:53:56,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:53:56,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1766818978, now seen corresponding path program 1 times [2023-11-26 11:53:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:56,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013419565] [2023-11-26 11:53:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:56,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013419565] [2023-11-26 11:53:56,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013419565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:56,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367277588] [2023-11-26 11:53:56,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:56,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:56,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:56,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:53:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:56,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:53:56,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:56,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:56,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367277588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:53:56,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:53:56,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:53:56,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21973526] [2023-11-26 11:53:56,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:56,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:53:56,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:53:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:53:56,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:53:56,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 12 transitions, 36 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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) [2023-11-26 11:53:56,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:56,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:53:56,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:56,932 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-11-26 11:53:56,933 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-26 11:53:56,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 17 events. 2/17 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 9. Up to 5 conditions per place. [2023-11-26 11:53:56,934 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 4 selfloop transitions, 7 changer transitions 0/15 dead transitions. [2023-11-26 11:53:56,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 73 flow [2023-11-26 11:53:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:53:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:53:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48 transitions. [2023-11-26 11:53:56,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2742857142857143 [2023-11-26 11:53:56,937 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 48 transitions. [2023-11-26 11:53:56,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 48 transitions. [2023-11-26 11:53:56,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:56,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 48 transitions. [2023-11-26 11:53:56,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2023-11-26 11:53:56,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,941 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,941 INFO L175 Difference]: Start difference. First operand has 14 places, 12 transitions, 36 flow. Second operand 7 states and 48 transitions. [2023-11-26 11:53:56,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 73 flow [2023-11-26 11:53:56,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 59 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:56,943 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 62 flow [2023-11-26 11:53:56,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-11-26 11:53:56,945 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 9 predicate places. [2023-11-26 11:53:56,945 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 62 flow [2023-11-26 11:53:56,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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) [2023-11-26 11:53:56,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:56,946 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1] [2023-11-26 11:53:56,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:57,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:53:57,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash -337049282, now seen corresponding path program 2 times [2023-11-26 11:53:57,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:57,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309919735] [2023-11-26 11:53:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:53:57,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:57,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309919735] [2023-11-26 11:53:57,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309919735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:57,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:57,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:57,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922458887] [2023-11-26 11:53:57,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:57,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:57,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:57,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:57,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:57,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:53:57,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-26 11:53:57,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:57,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:53:57,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:57,575 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-11-26 11:53:57,575 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 11:53:57,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 20 events. 2/20 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 18. Up to 14 conditions per place. [2023-11-26 11:53:57,576 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 12 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2023-11-26 11:53:57,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 96 flow [2023-11-26 11:53:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2023-11-26 11:53:57,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2023-11-26 11:53:57,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 32 transitions. [2023-11-26 11:53:57,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 32 transitions. [2023-11-26 11:53:57,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:57,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 32 transitions. [2023-11-26 11:53:57,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2023-11-26 11:53:57,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-26 11:53:57,584 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-26 11:53:57,584 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 62 flow. Second operand 4 states and 32 transitions. [2023-11-26 11:53:57,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 96 flow [2023-11-26 11:53:57,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:57,587 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 80 flow [2023-11-26 11:53:57,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-11-26 11:53:57,589 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 12 predicate places. [2023-11-26 11:53:57,589 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 80 flow [2023-11-26 11:53:57,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-26 11:53:57,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:57,590 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-26 11:53:57,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:53:57,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:53:57,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash 598760534, now seen corresponding path program 1 times [2023-11-26 11:53:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:57,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863812132] [2023-11-26 11:53:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:53:57,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863812132] [2023-11-26 11:53:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863812132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246523739] [2023-11-26 11:53:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:57,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:57,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:53:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:58,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:53:58,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:53:58,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:53:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246523739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:53:58,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:53:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 11:53:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846202594] [2023-11-26 11:53:58,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:58,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:53:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:53:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:53:58,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:53:58,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 80 flow. Second operand has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2023-11-26 11:53:58,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:58,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:53:58,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:58,848 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2023-11-26 11:53:58,848 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-26 11:53:58,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 32 events. 2/32 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 72. Up to 8 conditions per place. [2023-11-26 11:53:58,849 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 6 selfloop transitions, 15 changer transitions 0/25 dead transitions. [2023-11-26 11:53:58,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 170 flow [2023-11-26 11:53:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:53:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:53:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 98 transitions. [2023-11-26 11:53:58,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2613333333333333 [2023-11-26 11:53:58,854 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 98 transitions. [2023-11-26 11:53:58,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 98 transitions. [2023-11-26 11:53:58,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:58,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 98 transitions. [2023-11-26 11:53:58,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:58,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 25.0) internal successors, (400), 16 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) [2023-11-26 11:53:58,858 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 25.0) internal successors, (400), 16 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) [2023-11-26 11:53:58,858 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 80 flow. Second operand 15 states and 98 transitions. [2023-11-26 11:53:58,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 170 flow [2023-11-26 11:53:58,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:58,862 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 175 flow [2023-11-26 11:53:58,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-11-26 11:53:58,863 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 29 predicate places. [2023-11-26 11:53:58,863 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 175 flow [2023-11-26 11:53:58,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2023-11-26 11:53:58,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:58,864 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1] [2023-11-26 11:53:58,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:59,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:53:59,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:53:59,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:59,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1415094122, now seen corresponding path program 2 times [2023-11-26 11:53:59,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:59,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32930985] [2023-11-26 11:53:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:59,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:53:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:59,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32930985] [2023-11-26 11:53:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32930985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:59,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655387834] [2023-11-26 11:53:59,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:53:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:59,653 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:59,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:53:59,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:53:59,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:53:59,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:53:59,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:54:00,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:54:00,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655387834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:00,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:00,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-26 11:54:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975301785] [2023-11-26 11:54:00,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:00,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:54:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:00,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:54:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:54:00,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:54:00,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 175 flow. Second operand has 23 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 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) [2023-11-26 11:54:00,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:00,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:54:00,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:00,887 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2023-11-26 11:54:00,887 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-26 11:54:00,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 41 events. 2/41 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 132. Up to 11 conditions per place. [2023-11-26 11:54:00,888 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 6 selfloop transitions, 21 changer transitions 0/31 dead transitions. [2023-11-26 11:54:00,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 31 transitions, 283 flow [2023-11-26 11:54:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:54:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:54:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 133 transitions. [2023-11-26 11:54:00,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25333333333333335 [2023-11-26 11:54:00,892 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 133 transitions. [2023-11-26 11:54:00,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 133 transitions. [2023-11-26 11:54:00,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:00,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 133 transitions. [2023-11-26 11:54:00,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 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) [2023-11-26 11:54:00,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 25.0) internal successors, (550), 22 states have internal predecessors, (550), 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) [2023-11-26 11:54:00,896 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 25.0) internal successors, (550), 22 states have internal predecessors, (550), 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) [2023-11-26 11:54:00,896 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 175 flow. Second operand 21 states and 133 transitions. [2023-11-26 11:54:00,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 31 transitions, 283 flow [2023-11-26 11:54:00,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 31 transitions, 273 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:54:00,903 INFO L231 Difference]: Finished difference. Result has 59 places, 31 transitions, 276 flow [2023-11-26 11:54:00,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=276, PETRI_PLACES=59, PETRI_TRANSITIONS=31} [2023-11-26 11:54:00,904 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 48 predicate places. [2023-11-26 11:54:00,904 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 31 transitions, 276 flow [2023-11-26 11:54:00,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 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) [2023-11-26 11:54:00,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:00,905 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1] [2023-11-26 11:54:00,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:54:01,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:54:01,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:54:01,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1702970065, now seen corresponding path program 3 times [2023-11-26 11:54:01,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:01,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983148314] [2023-11-26 11:54:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:01,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:01,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:01,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983148314] [2023-11-26 11:54:01,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983148314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:01,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411109817] [2023-11-26 11:54:01,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:54:01,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:01,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:01,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:01,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:54:01,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:54:01,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:54:01,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:54:01,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:01,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:01,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411109817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:01,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:01,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-26 11:54:01,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836794913] [2023-11-26 11:54:01,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:01,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:01,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:01,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:01,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:54:01,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2023-11-26 11:54:01,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 31 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2023-11-26 11:54:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:01,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2023-11-26 11:54:01,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:01,876 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2023-11-26 11:54:01,876 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-26 11:54:01,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 40 events. 2/40 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 2 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 155. Up to 23 conditions per place. [2023-11-26 11:54:01,878 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 24 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2023-11-26 11:54:01,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 30 transitions, 330 flow [2023-11-26 11:54:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2023-11-26 11:54:01,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25 [2023-11-26 11:54:01,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 25 transitions. [2023-11-26 11:54:01,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 25 transitions. [2023-11-26 11:54:01,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:01,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 25 transitions. [2023-11-26 11:54:01,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-11-26 11:54:01,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-26 11:54:01,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-26 11:54:01,881 INFO L175 Difference]: Start difference. First operand has 59 places, 31 transitions, 276 flow. Second operand 4 states and 25 transitions. [2023-11-26 11:54:01,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 30 transitions, 330 flow [2023-11-26 11:54:01,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 30 transitions, 287 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-11-26 11:54:01,887 INFO L231 Difference]: Finished difference. Result has 48 places, 30 transitions, 239 flow [2023-11-26 11:54:01,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2023-11-26 11:54:01,888 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 37 predicate places. [2023-11-26 11:54:01,888 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 239 flow [2023-11-26 11:54:01,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2023-11-26 11:54:01,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:01,889 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1] [2023-11-26 11:54:01,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:02,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:54:02,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-26 11:54:02,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1252464848, now seen corresponding path program 1 times [2023-11-26 11:54:02,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972983930] [2023-11-26 11:54:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:54:02,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:02,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972983930] [2023-11-26 11:54:02,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972983930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:02,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:02,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333040242] [2023-11-26 11:54:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:02,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:02,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2023-11-26 11:54:02,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-26 11:54:02,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:02,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2023-11-26 11:54:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:02,338 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2023-11-26 11:54:02,338 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-26 11:54:02,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 39 events. 2/39 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 2 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 135. Up to 26 conditions per place. [2023-11-26 11:54:02,339 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-11-26 11:54:02,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 29 transitions, 289 flow [2023-11-26 11:54:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2023-11-26 11:54:02,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29333333333333333 [2023-11-26 11:54:02,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 22 transitions. [2023-11-26 11:54:02,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 22 transitions. [2023-11-26 11:54:02,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:02,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 22 transitions. [2023-11-26 11:54:02,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-26 11:54:02,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2023-11-26 11:54:02,342 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2023-11-26 11:54:02,342 INFO L175 Difference]: Start difference. First operand has 48 places, 30 transitions, 239 flow. Second operand 3 states and 22 transitions. [2023-11-26 11:54:02,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 29 transitions, 289 flow [2023-11-26 11:54:02,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 29 transitions, 279 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:54:02,346 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-11-26 11:54:02,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-11-26 11:54:02,347 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 35 predicate places. [2023-11-26 11:54:02,347 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-11-26 11:54:02,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-26 11:54:02,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2023-11-26 11:54:02,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2023-11-26 11:54:02,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2023-11-26 11:54:02,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2023-11-26 11:54:02,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-26 11:54:02,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:54:02,352 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-11-26 11:54:02,356 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:54:02,356 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:54:02,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:54:02 BasicIcfg [2023-11-26 11:54:02,363 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:54:02,363 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:54:02,363 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:54:02,363 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:54:02,364 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:54" (3/4) ... [2023-11-26 11:54:02,366 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:54:02,370 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-26 11:54:02,377 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 71 nodes and edges [2023-11-26 11:54:02,378 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-26 11:54:02,378 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 11:54:02,486 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:54:02,487 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:54:02,487 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:54:02,488 INFO L158 Benchmark]: Toolchain (without parser) took 10903.96ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 100.0MB in the beginning and 79.0MB in the end (delta: 21.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2023-11-26 11:54:02,488 INFO L158 Benchmark]: CDTParser took 1.21ms. Allocated memory is still 172.0MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:54:02,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1325.87ms. Allocated memory is still 172.0MB. Free memory was 99.9MB in the beginning and 104.4MB in the end (delta: -4.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 11:54:02,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.32ms. Allocated memory is still 172.0MB. Free memory was 104.4MB in the beginning and 101.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:54:02,489 INFO L158 Benchmark]: Boogie Preprocessor took 84.48ms. Allocated memory is still 172.0MB. Free memory was 101.7MB in the beginning and 98.1MB in the end (delta: 3.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 11:54:02,490 INFO L158 Benchmark]: RCFGBuilder took 1163.19ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 102.5MB in the end (delta: -4.4MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2023-11-26 11:54:02,490 INFO L158 Benchmark]: TraceAbstraction took 8102.46ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 101.7MB in the beginning and 84.2MB in the end (delta: 17.5MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2023-11-26 11:54:02,491 INFO L158 Benchmark]: Witness Printer took 123.93ms. Allocated memory is still 224.4MB. Free memory was 84.2MB in the beginning and 79.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:54:02,493 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21ms. Allocated memory is still 172.0MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1325.87ms. Allocated memory is still 172.0MB. Free memory was 99.9MB in the beginning and 104.4MB in the end (delta: -4.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.32ms. Allocated memory is still 172.0MB. Free memory was 104.4MB in the beginning and 101.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 84.48ms. Allocated memory is still 172.0MB. Free memory was 101.7MB in the beginning and 98.1MB in the end (delta: 3.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1163.19ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 102.5MB in the end (delta: -4.4MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8102.46ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 101.7MB in the beginning and 84.2MB in the end (delta: 17.5MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. * Witness Printer took 123.93ms. Allocated memory is still 224.4MB. Free memory was 84.2MB in the beginning and 79.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 31 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.0s, OverallIterations: 9, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 367 IncrementalHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 9 mSDtfsCounter, 367 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 109 SyntacticMatches, 11 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=7, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 249 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 283 ConstructedInterpolants, 0 QuantifiedInterpolants, 557 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1037 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 469/722 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:54:02,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ff279e-3a45-483b-b930-4ea29364a938/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE